libcm is a C development framework with an emphasis on audio signal processing applications.
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  1. #include "cmGlobal.h"
  2. #include "cmFloatTypes.h"
  3. #include "cmRpt.h"
  4. #include "cmErr.h"
  5. #include "cmCtx.h"
  6. #include "cmMem.h"
  7. #include "cmMallocDebug.h"
  8. #include "cmLinkedHeap.h"
  9. #include "cmGr.h"
  10. #include "cmGrDevCtx.h"
  11. // cmGr_t state flags
  12. enum
  13. {
  14. kDirtyGrFl = 0x01 // the cmGr object is dirty
  15. };
  16. // cmGrObj_t state flags
  17. enum
  18. {
  19. kDirtyObjFl = 0x0001, // this object is dirty
  20. kFocusObjFl = 0x0002, // this object has focus
  21. kSelectObjFl = 0x0004, // this object is selected
  22. kPhysRelObjFl = 0x0008, // use physical instead of virtual offset
  23. };
  24. typedef struct cmGrObj_str
  25. {
  26. unsigned id; //
  27. unsigned cfgFlags; //
  28. unsigned stateFlags; //
  29. cmGrObjFunc_t f; //
  30. cmGrVExt_t wext; // world coord's contained within this object (children of this object are contained by these extents)
  31. unsigned wlimitFlags; // kLeftGrFl | kRightGrFl | kTopGrFl | kBottomGrFl
  32. cmGrVExt_t wlimitExt; // limit extents for wext (ext's with set flags always define the associated wext value)
  33. struct cmGrObj_str* parent;
  34. struct cmGrObj_str* children;
  35. struct cmGrObj_str* rsib;
  36. struct cmGrObj_str* lsib;
  37. } cmGrObj_t;
  38. typedef struct cmGrSync_str
  39. {
  40. cmGrH_t grH;
  41. unsigned flags; // kGrXXXSyncGrFl
  42. struct cmGrSync_str* link;
  43. } cmGrSync_t;
  44. typedef struct cmGrColorMap_str
  45. {
  46. const cmChar_t* label;
  47. unsigned id;
  48. cmGrColor_t* map;
  49. unsigned cnt;
  50. struct cmGrColorMap_str* link;
  51. } cmGrColorMap_t;
  52. typedef struct cmGrKeyMap_str
  53. {
  54. unsigned idx; // index of this keymap entry (used for debugging)
  55. char ascii; // printible ascii character associated with this keycode or 0 if not printable
  56. cmGrKeyCodeId_t keycode; // cmGr keycode
  57. } cmGrKeyMap_t;
  58. typedef struct
  59. {
  60. cmCtx_t ctx;
  61. cmErr_t err;
  62. unsigned id; // user definable id
  63. cmLHeapH_t lhH;
  64. unsigned cfgFlags;
  65. unsigned stateFlags;
  66. cmGrObj_t* msDnObj; // obj under last ms dn
  67. cmGrPPt_t msDnPPt; // last ms dn loc'n
  68. cmGrVPt_t msDnVPt; // last ms dn in same coords as msDnObj->vext (inside msDnObj->parent->wxt)
  69. cmGrVPt_t msVPt; // cur ms pt in same coords as msDnObj->vext (inside msDnObj->parent->wxt)
  70. cmGrVSz_t msDnVOffs;
  71. bool selValidFl;
  72. cmGrVPt_t sel0Pt;
  73. cmGrVPt_t sel1Pt;
  74. cmGrVPt_t localPt;
  75. cmGrVPt_t globalPt;
  76. cmGrVExt_t vext; // view virtual extents
  77. cmGrPExt_t pext; // view physical extents
  78. cmGrObj_t* objs; // object tree
  79. cmGrObj_t* rootObj; // current root object
  80. unsigned char* img; // temporary image inversion buffer
  81. cmGrCbFunc_t cbFunc; //
  82. void* cbArg; //
  83. cmGrSync_t* syncs; //
  84. cmGrColorMap_t* maps; // color maps
  85. } cmGr_t;
  86. cmGrH_t cmGrNullHandle = cmSTATIC_NULL_HANDLE;
  87. cmGrObjH_t cmGrObjNullHandle = cmSTATIC_NULL_HANDLE;
  88. cmGrKeyMap_t _cmGrKeyMap[] =
  89. {
  90. { 0, 0, 0 },
  91. { 1, 0, 0 },
  92. { 2, 0, 0 },
  93. { 3, 0, 0 },
  94. { 4, 0, 0 },
  95. { 5, 0, kHomeGrId},
  96. { 6, 0, kPageUpGrId},
  97. { 7, 0, kEndGrId},
  98. { 8, 8, kBackSpaceGrId },
  99. { 9, 9, kTabGrId },
  100. { 10, 0, kPageDownGrId},
  101. { 11, 0, kLeftGrId},
  102. { 12, 0, kUpGrId},
  103. { 13, 13, kEnterGrId },
  104. { 14, 0, kRightGrId},
  105. { 15, 0, kDownGrId},
  106. { 16, 0, kInsertGrId},
  107. { 17, 0, kPrintGrId},
  108. { 18, 0, kScrollLockGrId},
  109. { 19, 0, kPauseGrId},
  110. { 20, 0, kMenuGrId},
  111. { 21, 0, kLShiftGrId},
  112. { 22, 0, kRShiftGrId},
  113. { 23, 0, kLCtrlGrId},
  114. { 24, 0, kRCtrlGrId},
  115. { 25, 0, kLAltGrId},
  116. { 26, 0, kRAltGrId},
  117. { 27, 27, kEscapeGrId },
  118. { 28, 0, kLSuperGrId},
  119. { 29, 0, kRSuperGrId},
  120. { 30, 0, kNumLockGrId},
  121. { 31, 0, kCapsLockGrId},
  122. { 32, 32, kSpaceGrId },
  123. { 33, 33, kExclMarkGrId },
  124. { 34, 34, kDQuoteGrId },
  125. { 35, 35, kPoundGrId },
  126. { 36, 36, kDollarGrId },
  127. { 37, 37, kPercentGrId },
  128. { 38, 38, kAmpersandGrId },
  129. { 39, 39, kApostropheGrId },
  130. { 40, 40, kLParenGrId },
  131. { 41, 41, kRParenGrId },
  132. { 42, 42, kAsteriskGrId },
  133. { 43, 43, kPlusGrId },
  134. { 44, 44, kCommaGrId },
  135. { 45, 45, kHyphenGrId },
  136. { 46, 46, kPeriodGrId },
  137. { 47, 47, kForwardSlashGrId },
  138. { 48, 48, k0GrId },
  139. { 49, 49, k1GrId },
  140. { 50, 50, k2GrId },
  141. { 51, 51, k3GrId },
  142. { 52, 52, k4GrId },
  143. { 53, 53, k5GrId },
  144. { 54, 54, k6GrId },
  145. { 55, 55, k7GrId },
  146. { 56, 56, k8GrId },
  147. { 57, 57, k9GrId },
  148. { 58, 58, kColonGrId },
  149. { 59, 59, kSemiColonGrId },
  150. { 60, 60, kLesserGrId },
  151. { 61, 61, kEqualGrId },
  152. { 62, 62, kGreaterGrId },
  153. { 63, 63, kQMarkGrId },
  154. { 64, 64, kAtGrId },
  155. { 65, 65, kA_GrId },
  156. { 66, 66, kB_GrId },
  157. { 67, 67, kC_GrId },
  158. { 68, 68, kD_GrId },
  159. { 69, 69, kE_GrId },
  160. { 70, 70, kF_GrId },
  161. { 71, 71, kG_GrId },
  162. { 72, 72, kH_GrId },
  163. { 73, 73, kI_GrId },
  164. { 74, 74, kJ_GrId },
  165. { 75, 75, kK_GrId },
  166. { 76, 76, kL_GrId },
  167. { 77, 77, kM_GrId },
  168. { 78, 78, kN_GrId },
  169. { 79, 79, kO_GrId },
  170. { 80, 80, kP_GrId },
  171. { 81, 81, kQ_GrId },
  172. { 82, 82, kR_GrId },
  173. { 83, 83, kS_GrId },
  174. { 84, 84, kT_GrId },
  175. { 85, 85, kU_GrId },
  176. { 86, 86, kV_GrId },
  177. { 87, 87, kW_GrId },
  178. { 88, 88, kX_GrId },
  179. { 89, 89, kY_GrId },
  180. { 90, 90, kZ_GrId },
  181. { 91, 91, kLBracketGrId },
  182. { 92, 92, kBackSlashGrId },
  183. { 93, 93, kRBracketGrId },
  184. { 94, 94, kCaretGrId },
  185. { 95, 95, kUnderScoreGrId },
  186. { 96, 96, kAccentGrId },
  187. { 97, 97, ka_GrId },
  188. { 98, 98, kb_GrId },
  189. { 99, 99, kc_GrId },
  190. { 100, 100, kd_GrId },
  191. { 101, 101, ke_GrId },
  192. { 102, 102, kf_GrId },
  193. { 103, 103, kg_GrId },
  194. { 104, 104, kh_GrId },
  195. { 105, 105, ki_GrId },
  196. { 106, 106, kj_GrId },
  197. { 107, 107, kk_GrId },
  198. { 108, 108, kl_GrId },
  199. { 109, 109, km_GrId },
  200. { 110, 110, kn_GrId },
  201. { 111, 111, ko_GrId },
  202. { 112, 112, kp_GrId },
  203. { 113, 113, kq_GrId },
  204. { 114, 114, kr_GrId },
  205. { 115, 115, ks_GrId },
  206. { 116, 116, kt_GrId },
  207. { 117, 117, ku_GrId },
  208. { 118, 118, kv_GrId },
  209. { 119, 119, kw_GrId },
  210. { 120, 120, kx_GrId },
  211. { 121, 121, ky_GrId },
  212. { 122, 122, kz_GrId },
  213. { 123, 123, kLBraceGrId },
  214. { 124, 124, kPipeGrId },
  215. { 125, 125, kRBraceGrId },
  216. { 126, 126, kTildeGrId },
  217. { 127, 127, kDeleteGrId },
  218. { 128, 42, kNP_MultGrId },
  219. { 129, 43, kNP_PlusGrId },
  220. { 130, 45, kNP_MinusGrId },
  221. { 131, 46, kNP_DecPtGrId},
  222. { 132, 47, kNP_DivGrId},
  223. { 133, 48, kNP_0GrId},
  224. { 134, 49, kNP_1GrId},
  225. { 135, 50, kNP_2GrId},
  226. { 136, 51, kNP_3GrId},
  227. { 137, 52, kNP_4GrId},
  228. { 138, 53, kNP_5GrId},
  229. { 139, 54, kNP_6GrId},
  230. { 140, 55, kNP_7GrId},
  231. { 141, 56, kNP_8GrId},
  232. { 142, 57, kNP_9GrId},
  233. { 143, 61, kNP_EqualGrId},
  234. { 144, 13, kNP_EnterGrId},
  235. { 145, 0, kFunc_1GrId},
  236. { 146, 0, kFunc_2GrId},
  237. { 147, 0, kFunc_3GrId},
  238. { 148, 0, kFunc_4GrId},
  239. { 149, 0, kFunc_5GrId},
  240. { 150, 0, kFunc_6GrId},
  241. { 151, 0, kFunc_7GrId},
  242. { 152, 0, kFunc_8GrId},
  243. { 153, 0, kFunc_9GrId},
  244. { 154, 0, kFunc_10GrId},
  245. { 155, 0, kFunc_11GrId},
  246. { 156, 0, kFunc_12GrId},
  247. { 157, 0, kBrightUpGrId},
  248. { 158, 0, kBrightDnGrId},
  249. { 159, 0, kAudio_PrevGrId},
  250. { 160, 0, kAudio_PlayGrId},
  251. { 161, 0, kAudio_NextGrId},
  252. { 162, 0, kAudio_MuteGrId},
  253. { 163, 0, kAudio_DnGrId },
  254. { 164, 0, kAudio_UpGrId },
  255. { 165, 0, kEjectGrId },
  256. { cmInvalidIdx, 0, cmInvalidId}
  257. };
  258. void _cmGrKeyMapValidate()
  259. {
  260. unsigned i;
  261. for(i=0; _cmGrKeyMap[i].idx != cmInvalidIdx; ++i)
  262. {
  263. assert( _cmGrKeyMap[i].idx == i );
  264. }
  265. }
  266. cmGrKeyMap_t* _cmGrFindKeyMap( unsigned keycode )
  267. {
  268. // printable ascii codes match their indexes
  269. if( 32 <= keycode && keycode <= 126 )
  270. return _cmGrKeyMap + keycode;
  271. unsigned i;
  272. for(i=0; i<32; ++i)
  273. if( _cmGrKeyMap[i].keycode == keycode )
  274. return _cmGrKeyMap + i;
  275. for(i=127; _cmGrKeyMap[i].idx != cmInvalidIdx; ++i)
  276. if( _cmGrKeyMap[i].keycode == keycode )
  277. return _cmGrKeyMap + i;
  278. assert(0);
  279. return NULL;
  280. }
  281. bool _cmGrSetViewExtents( cmGr_t* p, cmGrV_t minx, cmGrV_t miny, cmGrV_t maxx, cmGrV_t maxy );
  282. bool _cmGrSetViewExtentsE( cmGr_t* p, const cmGrVExt_t* e )
  283. { return _cmGrSetViewExtents(p, cmGrVExtMinX(e), cmGrVExtMinY(e), cmGrVExtMaxX(e), cmGrVExtMaxY(e) ); }
  284. //====================================================================================================
  285. // Expand cmGrVExt_t e0 to hold e1.
  286. // Return true if e0 is actually changed.
  287. bool cmGrVExtExpandToContain(cmGrVExt_t* e0, const cmGrVExt_t* e1)
  288. {
  289. bool fl = false;
  290. if( cmGrVExtIsNullOrEmpty(e0) )
  291. {
  292. *e0 = *e1;
  293. return true;
  294. }
  295. assert( cmGrVExtIsNorm(e0) && cmGrVExtIsNorm(e1) );
  296. // min-x
  297. if( cmGrVExtMinX(e0) > cmGrVExtMinX(e1) )
  298. {
  299. cmGrVExtSetMinX(e0, cmGrVExtMinX(e1));
  300. fl = true;
  301. }
  302. // min-y
  303. if( cmGrVExtMinY(e0) > cmGrVExtMinY(e1) )
  304. {
  305. cmGrVExtSetMinY(e0, cmGrVExtMinY(e1));
  306. fl = true;
  307. }
  308. // max-y
  309. if( cmGrVExtMaxY(e0) < cmGrVExtMaxY(e1) )
  310. {
  311. cmGrVExtSetMaxY(e0, cmGrVExtMaxY(e1));
  312. fl = true;
  313. }
  314. // max-x
  315. if( cmGrVExtMaxX(e0) < cmGrVExtMaxX(e1) )
  316. {
  317. cmGrVExtSetMaxX(e0, cmGrVExtMaxX(e1));
  318. fl = true;
  319. }
  320. return fl;
  321. }
  322. bool cmGrVExtContain( const cmGrVExt_t* e0, cmGrVExt_t* e1 )
  323. {
  324. bool fl = false;
  325. assert( cmGrVExtIsNorm(e0) && cmGrVExtIsNorm(e1) );
  326. // e1 must be able to fit inside e0
  327. assert( e1->sz.w <= e0->sz.w && e1->sz.h <= e0->sz.h );
  328. // if left edge of e1 is to left of e0
  329. if( cmGrVExtMinX(e1) < cmGrVExtMinX(e0) )
  330. {
  331. cmGrVExtSetMinX(e1,cmGrVExtMinX(e0));
  332. fl = true;
  333. }
  334. // if right edge of e1 is to right of e0
  335. if( cmGrVExtMaxX(e1) > cmGrVExtMaxX(e0) )
  336. {
  337. cmGrVExtSetMaxX(e1,cmGrVExtMaxX(e0));
  338. fl = true;
  339. }
  340. // if the bottom edge of e1 is below the bottom edge of e0
  341. if( cmGrVExtMinY(e1) < cmGrVExtMinY(e0) )
  342. {
  343. cmGrVExtSetMinY(e1,cmGrVExtMinY(e0));
  344. fl = true;
  345. }
  346. // if top edge of e1 is above the top edge of e0
  347. if( cmGrVExtMaxY(e1) > cmGrVExtMaxY(e0) )
  348. {
  349. cmGrVExtSetMaxY(e1,cmGrVExtMaxY(e0));
  350. fl = true;
  351. }
  352. return fl;
  353. }
  354. void cmGrPExtIntersect( cmGrPExt_t* r, const cmGrPExt_t* e0, const cmGrPExt_t* e1 )
  355. {
  356. if( cmGrPExtR(e0) < cmGrPExtL(e1) || cmGrPExtL(e0) > cmGrPExtR(e1)
  357. || cmGrPExtB(e0) < cmGrPExtT(e1) || cmGrPExtT(e0) > cmGrPExtB(e1) )
  358. {
  359. cmGrPExtSetEmpty(r);
  360. return;
  361. }
  362. cmGrPExtSetD(r,
  363. cmMax( cmGrPExtL(e0), cmGrPExtL(e1) ),
  364. cmMax( cmGrPExtT(e0), cmGrPExtT(e1) ),
  365. cmMin( cmGrPExtR(e0), cmGrPExtR(e1) ),
  366. cmMin( cmGrPExtB(e0), cmGrPExtB(e1) ) );
  367. }
  368. void cmGrVExtIntersect( cmGrVExt_t* r, const cmGrVExt_t* e0, const cmGrVExt_t* e1 )
  369. {
  370. if( cmGrVExtMaxX(e0) < cmGrVExtMinX(e1) || cmGrVExtMinX(e0) > cmGrVExtMaxX(e1)
  371. || cmGrVExtMaxY(e0) < cmGrVExtMinY(e1) || cmGrVExtMinY(e0) > cmGrVExtMaxY(e1) )
  372. {
  373. cmGrVExtSetEmpty(r);
  374. return;
  375. }
  376. cmGrVExtSetD(r,
  377. cmMax( cmGrVExtMinX(e0), cmGrVExtMinX(e1) ),
  378. cmMax( cmGrVExtMinY(e0), cmGrVExtMinY(e1) ),
  379. cmMin( cmGrVExtMaxX(e0), cmGrVExtMaxX(e1) ),
  380. cmMin( cmGrVExtMaxY(e0), cmGrVExtMaxY(e1) ) );
  381. }
  382. //====================================================================================================
  383. //====================================================================================================
  384. cmGr_t* _cmGrHandleToPtr( cmGrH_t h )
  385. {
  386. cmGr_t* p = (cmGr_t*)h.h;
  387. assert( p != NULL );
  388. return p;
  389. }
  390. cmGrObj_t* _cmGrObjHandleToPtr( cmGrObjH_t h )
  391. {
  392. cmGrObj_t* p = (cmGrObj_t*)h.h;
  393. assert( p != NULL );
  394. return p;
  395. }
  396. //====================================================================================================
  397. unsigned cmGrColorMapCount( cmGrH_t grH )
  398. {
  399. cmGr_t* p = _cmGrHandleToPtr(grH);
  400. cmGrColorMap_t* cmp = p->maps;
  401. unsigned n = 0;
  402. for(; cmp!=NULL; cmp=cmp->link)
  403. ++n;
  404. return n;
  405. }
  406. cmGrColorMap_t* _cmGrColorMapFromIndex( cmGr_t* p, unsigned idx )
  407. {
  408. unsigned i = 0;
  409. cmGrColorMap_t* cmp = p->maps;
  410. for(; cmp!=NULL; ++i,cmp=cmp->link)
  411. if( i == idx )
  412. break;
  413. return cmp;
  414. }
  415. cmGrColorMap_t* _cmGrColorMapFromId( cmGr_t* p, unsigned id )
  416. {
  417. cmGrColorMap_t* cmp = p->maps;
  418. for(; cmp!=NULL; cmp=cmp->link)
  419. if( cmp->id == id )
  420. break;
  421. return cmp;
  422. }
  423. unsigned cmGrColorMapId( cmGrH_t grH, unsigned mapIdx )
  424. {
  425. cmGr_t* p = _cmGrHandleToPtr(grH);
  426. cmGrColorMap_t* cmp;
  427. if((cmp = _cmGrColorMapFromIndex(p,mapIdx)) == NULL )
  428. return cmInvalidId;
  429. return cmp->id;
  430. }
  431. const cmChar_t* cmGrColorMapLabel( cmGrH_t grH, unsigned id )
  432. {
  433. cmGr_t* p = _cmGrHandleToPtr(grH);
  434. cmGrColorMap_t* cmp;
  435. if((cmp = _cmGrColorMapFromId(p,id)) == NULL )
  436. return NULL;
  437. return cmp->label;
  438. }
  439. unsigned _cmGrColorMapRegister( cmGr_t* p, cmChar_t* label, const cmGrColor_t* array, unsigned cnt )
  440. {
  441. // locate an available id
  442. unsigned id = 0;
  443. while( _cmGrColorMapFromId(p,id)!=NULL )
  444. ++id;
  445. cmGrColorMap_t* cmp = cmLhAllocZ(p->lhH,cmGrColorMap_t,1);
  446. cmp->label = cmLhAllocStr(p->lhH,label);
  447. cmp->id = id;
  448. cmp->map = cmLhAllocZ(p->lhH,cmGrColor_t,cnt);
  449. cmp->cnt = cnt;
  450. cmp->link = p->maps;
  451. p->maps = cmp;
  452. memcpy(cmp->map,array,sizeof(cmGrColor_t)*cnt);
  453. return id;
  454. }
  455. unsigned cmGrColorMapRegister( cmGrH_t grH, cmChar_t* label, const cmGrColor_t* array, unsigned cnt )
  456. { return _cmGrColorMapRegister( _cmGrHandleToPtr(grH),label, array, cnt ); }
  457. cmGrColor_t* cmGrColorMap( cmGrH_t grH, unsigned mapId )
  458. {
  459. cmGr_t* p = _cmGrHandleToPtr(grH);
  460. cmGrColorMap_t* cmp;
  461. if((cmp = _cmGrColorMapFromId(p,mapId)) == NULL )
  462. return NULL;
  463. return cmp->map;
  464. }
  465. unsigned cmGrColorMapEleCount( cmGrH_t grH, unsigned mapId )
  466. {
  467. cmGr_t* p = _cmGrHandleToPtr(grH);
  468. cmGrColorMap_t* cmp;
  469. if((cmp = _cmGrColorMapFromId(p,mapId)) == NULL )
  470. return cmInvalidId;
  471. return cmp->cnt;
  472. }
  473. void _cmGrRgbInitDefaultColorMap( cmGr_t* p )
  474. {
  475. unsigned map[] =
  476. {
  477. 0x000000, // black
  478. 0x00008b, // dark blue
  479. 0x0000ff, // blue
  480. 0x008080, // teal
  481. 0x00ffff, // cyan
  482. 0x00ff7f, // spring green
  483. 0x00ff00, // green
  484. 0x7cfc00, // lawn green
  485. 0xffff00, // yellow
  486. 0xff7f7f, // pink
  487. 0xff00ff, // magenta
  488. 0xff007f, //
  489. 0xff0000, // red
  490. 0x7f0000, //
  491. 0xffffff // white
  492. };
  493. unsigned n = sizeof(map)/sizeof(unsigned);
  494. _cmGrColorMapRegister(p,"default",map,n);
  495. }
  496. //====================================================================================================
  497. // Object Callback Functions
  498. //====================================================================================================
  499. void _cmGrObjSetupFuncArgs( cmGrObjFuncArgs_t* a, cmGr_t* p, cmGrObj_t* op )
  500. {
  501. cmGrH_t h;
  502. cmGrObjH_t oh;
  503. h.h = p;
  504. oh.h = op;
  505. a->ctx = &p->ctx;
  506. a->grH = h;
  507. a->objH = oh;
  508. a->msDnPPt = p->msDnPPt;
  509. a->msDnVPt = p->msDnVPt;
  510. a->msDnVOffs = p->msDnVOffs;
  511. a->msVPt = p->msVPt;
  512. oh.h = p->msDnObj;
  513. a->msDnObjH = oh;
  514. }
  515. cmGrRC_t _cmGrObjCbCreate( cmGr_t* p, cmGrObj_t* op )
  516. {
  517. cmGrRC_t rc = kOkGrRC;
  518. if( op->f.createCbFunc != NULL )
  519. {
  520. cmGrObjFuncArgs_t a;
  521. _cmGrObjSetupFuncArgs(&a,p,op);
  522. a.cbArg = op->f.createCbArg;
  523. if((rc = op->f.createCbFunc(&a)) != kOkGrRC )
  524. rc = cmErrMsg(&p->err,kAppErrGrRC,"An application object (id=%i) failed on 'create'",op->id);
  525. }
  526. return rc;
  527. }
  528. void _cmGrObjCbDestroy( cmGr_t* p, cmGrObj_t* op )
  529. {
  530. if( op->f.destroyCbFunc != NULL )
  531. {
  532. cmGrObjFuncArgs_t a;
  533. _cmGrObjSetupFuncArgs(&a,p,op);
  534. a.cbArg = op->f.destroyCbArg;
  535. op->f.destroyCbFunc(&a);
  536. }
  537. }
  538. void _cmGrObjCbRender( cmGr_t* p, cmGrDcH_t dcH, const cmGrObj_t* op )
  539. {
  540. if( op->f.renderCbFunc != NULL )
  541. {
  542. cmGrObjFuncArgs_t a;
  543. _cmGrObjSetupFuncArgs(&a,p,(cmGrObj_t*)op);
  544. a.cbArg = op->f.renderCbArg;
  545. op->f.renderCbFunc(&a, dcH );
  546. }
  547. }
  548. int _cmGrObjCbDistance( cmGr_t* p, const cmGrObj_t* op, int px, int py )
  549. {
  550. int d = INT_MAX;
  551. if( op->f.distanceCbFunc != NULL )
  552. {
  553. cmGrObjFuncArgs_t a;
  554. _cmGrObjSetupFuncArgs(&a,p,(cmGrObj_t*)op);
  555. a.cbArg = op->f.distanceCbArg;
  556. d = op->f.distanceCbFunc(&a,px,py);
  557. }
  558. return d;
  559. }
  560. bool _cmGrObjCbEvent( cmGr_t* p, cmGrObj_t* op, unsigned flags, unsigned key, int px, int py )
  561. {
  562. bool fl = false;
  563. if( op->f.eventCbFunc != NULL )
  564. {
  565. cmGrObjFuncArgs_t a;
  566. _cmGrObjSetupFuncArgs(&a,p,op);
  567. a.cbArg = op->f.eventCbArg;
  568. fl = op->f.eventCbFunc(&a,flags,key,px,py);
  569. }
  570. return fl;
  571. }
  572. void _cmGrObjCbVExt( cmGr_t* p, const cmGrObj_t* op, cmGrVExt_t* vext )
  573. {
  574. if( op->f.vextCbFunc == NULL )
  575. cmGrVExtSetEmpty(vext);
  576. else
  577. {
  578. cmGrObjFuncArgs_t a;
  579. _cmGrObjSetupFuncArgs(&a,p,(cmGrObj_t*)op);
  580. a.cbArg = op->f.vextCbArg;
  581. op->f.vextCbFunc(&a,vext);
  582. }
  583. }
  584. bool _cmGrObjCbIsInside( cmGr_t* p, const cmGrObj_t* op, int px, int py, cmGrV_t vx, cmGrV_t vy )
  585. {
  586. bool fl = false;
  587. if( op->f.isInsideCbFunc != NULL )
  588. {
  589. cmGrObjFuncArgs_t a;
  590. _cmGrObjSetupFuncArgs(&a,p,(cmGrObj_t*)op);
  591. a.cbArg = op->f.isInsideCbArg;
  592. fl = op->f.isInsideCbFunc(&a,px,py,vx,vy);
  593. }
  594. return fl;
  595. }
  596. //====================================================================================================
  597. // Object Private Functions
  598. //====================================================================================================
  599. // Return true if pp is an ancestor (parent,grand-parent,great-grand-parent,...) of cp.
  600. bool _cmGrObjIsAncestor( cmGrObj_t* pp, cmGrObj_t* cp )
  601. {
  602. cmGrObj_t* tp = cp->parent;
  603. for(; tp != NULL; tp=tp->parent )
  604. if( tp == pp )
  605. break;
  606. return tp!=NULL;
  607. }
  608. // Append 'op' as the right-most child of 'pp'.
  609. void _cmGrObjAppendChild( cmGrObj_t* pp, cmGrObj_t* cp)
  610. {
  611. cp->parent = pp;
  612. if( pp->children == NULL )
  613. {
  614. pp->children = cp;
  615. cp->lsib = NULL;
  616. cp->rsib = NULL;
  617. }
  618. else
  619. {
  620. cmGrObj_t* op = pp->children;
  621. while( op->rsib != NULL )
  622. op = op->rsib;
  623. op->rsib = cp;
  624. cp->rsib = NULL;
  625. cp->lsib = op;
  626. }
  627. }
  628. // Insert 'op' on the left of 'rp'.
  629. void _cmGrObjInsertOnLeft( cmGrObj_t* op, cmGrObj_t* rp )
  630. {
  631. op->parent = rp->parent;
  632. op->rsib = rp;
  633. op->lsib = rp->lsib;
  634. if( rp->lsib == NULL )
  635. {
  636. assert( rp->parent == rp->parent->children);
  637. rp->parent->children = op;
  638. }
  639. else
  640. {
  641. rp->lsib->rsib = op;
  642. }
  643. rp->lsib = op;
  644. }
  645. // Insert 'op' on the right of 'lp'.
  646. // 'pp' is the parent of 'lp'. 'pp' must be given explicitely to cover
  647. // the case where lp is NULL - in which case the new parent for op
  648. // cannot be determined from lp.
  649. void _cmGrObjInsertOnRight( cmGrObj_t* op, cmGrObj_t* lp, cmGrObj_t* pp )
  650. {
  651. op->parent = pp;
  652. if( lp == NULL )
  653. {
  654. assert( pp != NULL && pp->children==NULL );
  655. pp->children = op;
  656. op->lsib = NULL;
  657. op->rsib = NULL;
  658. return;
  659. }
  660. assert( lp->parent == pp );
  661. op->lsib = lp;
  662. op->rsib = lp->rsib;
  663. if( lp->rsib != NULL )
  664. lp->rsib->lsib = op;
  665. lp->rsib = op;
  666. }
  667. // Unlink 'op' from the tree but leave it's children attached.
  668. void _cmGrObjUnlink( cmGrObj_t * op )
  669. {
  670. if( op->parent != NULL && op->parent->children == op )
  671. op->parent->children = op->parent->children->rsib;
  672. if( op->rsib != NULL )
  673. op->rsib->lsib = op->lsib;
  674. if( op->lsib != NULL )
  675. op->lsib->rsib = op->rsib;
  676. op->parent = NULL;
  677. op->rsib = NULL;
  678. op->lsib = NULL;
  679. }
  680. // Free 'op' and all of its children.
  681. // 'op' must be unlinked before calling this function
  682. cmGrRC_t _cmGrObjFree( cmGr_t* p, cmGrObj_t* op )
  683. {
  684. cmGrRC_t rc = kOkGrRC;
  685. // go to the deepest child
  686. if( op->children != NULL )
  687. if((rc = _cmGrObjFree(p,op->children)) != kOkGrRC )
  688. return rc;
  689. // go right
  690. if( op->rsib != NULL )
  691. if((rc = _cmGrObjFree(p,op->rsib)) != kOkGrRC )
  692. return rc;
  693. // inform the application that we are destroying this object
  694. _cmGrObjCbDestroy(p,op);
  695. _cmGrObjUnlink(op);
  696. cmMemFree(op);
  697. return rc;
  698. }
  699. cmGrRC_t _cmGrObjUnlinkAndFree( cmGr_t* p, cmGrObj_t* op )
  700. {
  701. cmGrRC_t rc = kOkGrRC;
  702. cmGrObj_t* rsib = op->rsib;
  703. cmGrObj_t* par = op->parent;
  704. _cmGrObjUnlink(op);
  705. // if the free fails ...
  706. if((rc = _cmGrObjFree(p,op)) != kOkGrRC )
  707. {
  708. // ... then restore the objects position
  709. if( rsib == NULL )
  710. _cmGrObjInsertOnLeft(op,rsib);
  711. else
  712. _cmGrObjAppendChild(par,op);
  713. }
  714. return rc;
  715. }
  716. // Return kL,T,R,BGrFl indicating which directions of wext are in violation of op->wlimitExt.
  717. // Return's 0 if no limits are in violation
  718. unsigned _cmGrObjWorldLimitsTestViolation( const cmGrObj_t* op, const cmGrVExt_t* wext )
  719. {
  720. unsigned violFlags = 0;
  721. if( cmIsFlag( op->wlimitFlags, kLeftGrFl) )
  722. if( cmGrVExtMinX(wext) < cmGrVExtMinX(&op->wlimitExt) )
  723. violFlags = kLeftGrFl;
  724. if( cmIsFlag( op->wlimitFlags, kTopGrFl) )
  725. if( cmGrVExtMaxY(wext) < cmGrVExtMaxY(&op->wlimitExt) )
  726. violFlags = kTopGrFl;
  727. if( cmIsFlag( op->wlimitFlags, kRightGrFl) )
  728. if( cmGrVExtMaxX(wext) > cmGrVExtMaxX(&op->wlimitExt) )
  729. violFlags = kRightGrFl;
  730. if( cmIsFlag( op->wlimitFlags, kBottomGrFl) )
  731. if( cmGrVExtMinY(wext) > cmGrVExtMinY(&op->wlimitExt) )
  732. violFlags = kBottomGrFl;
  733. return violFlags;
  734. }
  735. // If op has world extent limits then apply them to 'ext'.
  736. // Extent directions in 'ext' which do not have limits in 'op' are unchanged.
  737. // Extent directions in 'ext' which have limits are set to the limit.
  738. void _cmGrObjApplyExtLimits( cmGrObj_t* op, cmGrVExt_t* ext )
  739. {
  740. if( cmIsFlag(op->wlimitFlags,kLeftGrFl) )
  741. cmGrVExtSetMinX(ext,cmGrVExtMinX(&op->wlimitExt));
  742. if( cmIsFlag(op->wlimitFlags,kBottomGrFl) )
  743. cmGrVExtSetMinY(ext,cmGrVExtMinY(&op->wlimitExt));
  744. if( cmIsFlag(op->wlimitFlags,kTopGrFl) )
  745. cmGrVExtSetMaxY(ext,cmGrVExtMaxY(&op->wlimitExt));
  746. if( cmIsFlag(op->wlimitFlags,kRightGrFl) )
  747. cmGrVExtSetMaxX(ext,cmGrVExtMaxX(&op->wlimitExt));
  748. }
  749. // Return the outside extents of the children of 'op'.
  750. // Returns false if there are no children and leaves wext set to NULL.
  751. bool _cmGrObjChildExts( cmGr_t* p, const cmGrObj_t* op, cmGrVExt_t* ext )
  752. {
  753. cmGrVExtSetNull(ext);
  754. op = op->children;
  755. if( op == NULL )
  756. return false;
  757. _cmGrObjCbVExt(p,op,ext);
  758. for(op=op->rsib; op!=NULL; op=op->rsib)
  759. {
  760. cmGrVExt_t e;
  761. _cmGrObjCbVExt(p,op,&e);
  762. cmGrVExtExpandToContain(ext,&e);
  763. }
  764. return true;
  765. }
  766. cmGrRC_t _cmGrObjSetWorldExt( cmGr_t* p, cmGrObj_t* op, const cmGrVExt_t* wext );
  767. // The world extents changed to 'ref_wext' on an object.
  768. // Examine all 'sync'ed' objects and expand them to be contained by 'ref_wext'.
  769. cmGrRC_t _cmGrSyncWorldExtentsExpand( cmGr_t* p, const cmGrVExt_t* ref_wext )
  770. {
  771. cmGrRC_t rc = kOkGrRC;
  772. // apply changes to synch targets
  773. cmGrSync_t* sp = p->syncs;
  774. for(; sp!=NULL; sp=sp->link)
  775. if( cmIsFlag(sp->flags,kWorldSyncGrFl) )
  776. {
  777. // get the target ROOT object
  778. cmGrObj_t* top = _cmGrObjHandleToPtr(cmGrRootObjH(sp->grH));
  779. bool fl = false;
  780. cmGrVExt_t top_wext = top->wext;
  781. //printf("sync %i ",top->id);
  782. //cmGrVExtPrint("top_wext",&top_wext);
  783. //cmGrVExtPrint("ref_wext",ref_wext);
  784. // if horz sync was requested ...
  785. if( !fl && cmIsFlag(sp->flags,kHorzSyncGrFl) )
  786. {
  787. if( cmGrVExtIsNullOrEmpty(&top_wext) )
  788. {
  789. cmGrVExtSetMinX(&top_wext,cmGrVExtMinX(ref_wext));
  790. cmGrVExtSetMaxX(&top_wext,cmGrVExtMaxX(ref_wext));
  791. fl = true;
  792. }
  793. else
  794. {
  795. // ... and the target needs to expand and can expand
  796. if( cmGrVExtMinX(&top_wext) > cmGrVExtMinX(ref_wext) && cmIsNotFlag(top->wlimitFlags,kLeftGrFl) )
  797. {
  798. cmGrVExtSetMinX(&top_wext,cmGrVExtMinX(ref_wext)); // .. expand the view
  799. fl = true;
  800. }
  801. if( cmGrVExtMaxX(&top_wext) < cmGrVExtMaxX(ref_wext) && cmIsNotFlag(top->wlimitFlags,kRightGrFl) )
  802. {
  803. cmGrVExtSetMaxX(&top_wext,cmGrVExtMaxX(ref_wext));
  804. fl = true;
  805. }
  806. }
  807. }
  808. // if vert sync was requested ...
  809. if( !fl && cmIsFlag(sp->flags,kVertSyncGrFl) )
  810. {
  811. if( cmGrVExtIsNullOrEmpty(&top_wext) )
  812. {
  813. cmGrVExtSetMinY(&top_wext,cmGrVExtMinY(ref_wext));
  814. cmGrVExtSetMaxY(&top_wext,cmGrVExtMaxY(ref_wext));
  815. fl = true;
  816. }
  817. else
  818. {
  819. if( cmGrVExtMinY(&top_wext) > cmGrVExtMinY(ref_wext) && cmIsNotFlag(top->wlimitFlags,kBottomGrFl))
  820. {
  821. cmGrVExtSetMinY(&top_wext,cmGrVExtMinY(ref_wext));
  822. fl = true;
  823. }
  824. if( cmGrVExtMaxY(&top_wext) < cmGrVExtMaxY(ref_wext) && cmIsNotFlag(top->wlimitFlags,kTopGrFl) )
  825. {
  826. cmGrVExtSetMaxY(&top_wext,cmGrVExtMaxY(ref_wext));
  827. fl = true;
  828. }
  829. }
  830. }
  831. // If fl is set then top_wext contains an expanded world view
  832. if( fl )
  833. {
  834. //cmGrVExtPrint("out top_wext",&top_wext);
  835. // this call may result in a recursion back into this function
  836. if((rc = _cmGrObjSetWorldExt( _cmGrHandleToPtr(sp->grH), top, &top_wext )) != kOkGrRC )
  837. goto errLabel;
  838. }
  839. }
  840. errLabel:
  841. return rc;
  842. }
  843. cmGrRC_t _cmGrObjSetWorldExt( cmGr_t* p, cmGrObj_t* op, const cmGrVExt_t* wext )
  844. {
  845. cmGrRC_t rc = kOkGrRC;
  846. cmGrVExt_t ce;
  847. cmGrVExt_t we = *wext; // make a copy of the new extents to override the 'const' on 'wext'.
  848. // apply the world ext limits to 'we'.
  849. _cmGrObjApplyExtLimits(op,&we);
  850. assert(cmGrVExtIsNorm(&we)); // assert w/h are positive
  851. // get the extents around all children
  852. if( _cmGrObjChildExts(p, op, &ce ) )
  853. {
  854. // if 'ce' is not entirely inside 'we'
  855. if( cmGrVExtIsExtInside(&we,&ce) == false )
  856. return cmErrMsg(&p->err,kExtsErrGrRC,"The change in world extents would have resulted in child objects outside the requested world extents.");
  857. }
  858. // if world extents are actually changing
  859. if( !cmGrVExtIsEqual(&op->wext,&we) )
  860. {
  861. // update the world extents for this object
  862. op->wext = we;
  863. op->stateFlags = cmSetFlag(op->stateFlags,kDirtyObjFl);
  864. //cmGrVExtPrint(cmTsPrintf("set w: %i ",op->id),&we);
  865. // if this is the root object
  866. if( p->rootObj == op )
  867. {
  868. // this call may result in recursion back into this function
  869. // if two cmGr's are mutual sync targets - an infinite loop
  870. // should be avoided by the cmGrVExtIsEqual() test above.
  871. rc = _cmGrSyncWorldExtentsExpand(p, wext );
  872. }
  873. }
  874. return rc;
  875. }
  876. void _cmGrObjReport( cmGr_t* p, cmGrObj_t* op, cmRpt_t* rpt )
  877. {
  878. cmGrVExt_t vext;
  879. cmRptPrintf(rpt,"id:0x%x cfg:0x%x state:0x%x\n",op->id,op->cfgFlags,op->stateFlags);
  880. _cmGrObjCbVExt( p, op, &vext);
  881. cmGrVExtRpt(&vext,rpt);
  882. cmRptPrintf(rpt,"\n");
  883. }
  884. void _cmGrObjReportR( cmGr_t* p, cmGrObj_t* op, cmRpt_t* rpt)
  885. {
  886. _cmGrObjReport(p, op,rpt);
  887. if( op->children != NULL )
  888. _cmGrObjReport(p,op->children,rpt);
  889. if( op->rsib != NULL )
  890. _cmGrObjReport(p,op->rsib,rpt);
  891. }
  892. //====================================================================================================
  893. cmGrRC_t cmGrObjCreate( cmGrH_t h, cmGrObjH_t* ohp, cmGrObjH_t parentH, cmGrObjFunc_t* f, unsigned id, unsigned flags, const cmGrVExt_t* wext )
  894. {
  895. cmGrRC_t rc;
  896. if((rc = cmGrObjDestroy(h,ohp)) != kOkGrRC )
  897. return rc;
  898. cmGr_t* p = _cmGrHandleToPtr(h);
  899. // allocate the new object
  900. cmGrObj_t* op = cmMemAllocZ(cmGrObj_t,1);
  901. op->id = id;
  902. op->cfgFlags = flags;
  903. op->stateFlags = 0;
  904. op->f = *f;
  905. if( wext != NULL )
  906. {
  907. op->wext = *wext;
  908. if( cmGrVExtIsNotNull(wext) )
  909. cmGrVExtNorm(&op->wext);
  910. }
  911. // if an explicit parent was not provided
  912. // then assign the root object as the parent
  913. if( cmGrObjIsValid(h,parentH) == false )
  914. parentH.h = p->rootObj;
  915. // insert the object into the tree
  916. if( cmGrObjIsValid(h,parentH) )
  917. _cmGrObjAppendChild(_cmGrObjHandleToPtr(parentH),op);
  918. else
  919. {
  920. // no root object exits - so make this obj the root
  921. assert(p->objs == NULL );
  922. p->objs = op;
  923. }
  924. ohp->h = op;
  925. // Notify the application that an object was created.
  926. if((rc = _cmGrObjCbCreate(p,op)) != kOkGrRC )
  927. goto errLabel;
  928. if( f->vextCbFunc != NULL )
  929. {
  930. cmGrVExt_t vext;
  931. cmGrVExtSetEmpty(&vext);
  932. // get the local virtual extents for the new object
  933. cmGrObjLocalVExt(h, *ohp, &vext );
  934. if( cmGrVExtIsNotNullOrEmpty(&vext) )
  935. {
  936. // expand the parents world to contain the new object
  937. if( op->parent != NULL )
  938. {
  939. cmGrVExt_t parent_wext = op->parent->wext;
  940. if( cmGrVExtExpandToContain(&parent_wext,&vext) )
  941. _cmGrObjSetWorldExt(p,op->parent,&parent_wext);
  942. assert( cmGrVExtIsExtInside(&op->parent->wext,&vext) );
  943. }
  944. // if cfg'd to expand the view to contain new objects then do so here
  945. if( op->parent!=NULL && op->parent->parent==NULL && cmIsFlag(p->cfgFlags,kExpandViewGrFl) && cmGrVExtIsExtInside(&p->vext,&vext) == false )
  946. {
  947. cmGrVExt_t v = p->vext;
  948. if( cmGrVExtExpandToContain(&v,&vext) )
  949. _cmGrSetViewExtentsE(p,&v);
  950. assert( cmGrVExtIsExtInside(&op->parent->wext,&p->vext));
  951. }
  952. // if the new object is inside the view extents then mark
  953. // the object as dirty
  954. if( cmGrVExtIsExtInside(&p->vext,&vext) )
  955. op->stateFlags = cmSetFlag(op->stateFlags,kDirtyObjFl);
  956. }
  957. }
  958. errLabel:
  959. if( rc != kOkGrRC )
  960. cmGrObjDestroy(h,ohp);
  961. return rc;
  962. }
  963. cmGrRC_t _cmGrObjDestroy( cmGr_t* p, cmGrObj_t* op )
  964. {
  965. if( op == NULL )
  966. return kOkGrRC;
  967. return _cmGrObjUnlinkAndFree( p, op);
  968. }
  969. cmGrRC_t cmGrObjDestroy( cmGrH_t h, cmGrObjH_t* ohp )
  970. {
  971. cmGrRC_t rc = kOkGrRC;
  972. if( ohp==NULL || cmGrObjIsValid(h,*ohp) == false )
  973. return kOkGrRC;
  974. cmGrObj_t* op = _cmGrObjHandleToPtr(*ohp);
  975. if((rc = _cmGrObjDestroy(_cmGrHandleToPtr(h),op)) != kOkGrRC )
  976. return rc;
  977. ohp->h = NULL;
  978. return rc;
  979. }
  980. cmGrRC_t cmGrObjIsValid( cmGrH_t h, cmGrObjH_t oh )
  981. { return oh.h != NULL; }
  982. unsigned cmGrObjId( cmGrObjH_t oh )
  983. { return _cmGrObjHandleToPtr(oh)->id; }
  984. void cmGrObjSetId( cmGrObjH_t oh, unsigned id )
  985. {
  986. cmGrObj_t* op = _cmGrObjHandleToPtr(oh);
  987. op->id = id;
  988. }
  989. cmGrObjH_t cmGrObjParent( cmGrObjH_t oh )
  990. {
  991. cmGrObjH_t poh;
  992. poh.h = _cmGrObjHandleToPtr(oh)->parent;
  993. return poh;
  994. }
  995. cmGrRC_t cmGrObjSetWorldExt( cmGrH_t h, cmGrObjH_t oh, const cmGrVExt_t* wext )
  996. {
  997. cmGr_t* p = _cmGrHandleToPtr(h);
  998. cmGrObj_t* op = _cmGrObjHandleToPtr(oh);
  999. return _cmGrObjSetWorldExt(p,op,wext);
  1000. }
  1001. void cmGrObjWorldExt( cmGrObjH_t oh, cmGrVExt_t* wext )
  1002. {
  1003. cmGrObj_t* op = _cmGrObjHandleToPtr(oh);
  1004. *wext = op->wext;
  1005. }
  1006. cmGrRC_t cmGrObjSetWorldLimitExt( cmGrH_t h, cmGrObjH_t oh, const cmGrVExt_t* vext, unsigned limitFlags )
  1007. {
  1008. cmGrRC_t rc;
  1009. cmGrObj_t* op = _cmGrObjHandleToPtr(oh);
  1010. // store the current world extents
  1011. cmGrVExt_t lext = op->wlimitExt;
  1012. unsigned lfl = op->wlimitFlags;
  1013. // set the new limits
  1014. op->wlimitExt = *vext;
  1015. op->wlimitFlags = limitFlags;
  1016. cmGrVExtNorm(&op->wlimitExt);
  1017. // attempt to apply the current world extents with the new limits
  1018. // (this may fail if their are child objects out of range of the new extents)
  1019. if( cmGrVExtIsNotNull(&op->wext ) )
  1020. {
  1021. if((rc = cmGrObjSetWorldExt(h,oh,&op->wext)) != kOkGrRC )
  1022. {
  1023. // we failed - restore the old limits
  1024. op->wlimitExt = lext;
  1025. op->wlimitFlags = lfl;
  1026. }
  1027. }
  1028. return rc;
  1029. }
  1030. void cmGrObjWorldLimitExt( cmGrObjH_t oh, cmGrVExt_t* vext, unsigned* limitFlags )
  1031. {
  1032. cmGrObj_t* op = _cmGrObjHandleToPtr(oh);
  1033. if( vext != NULL )
  1034. *vext = op->wlimitExt;
  1035. if( limitFlags != NULL )
  1036. *limitFlags = op->wlimitFlags;
  1037. }
  1038. void cmGrObjSetCreateCb( cmGrObjH_t oh, cmGrCreateObjCb_t cbFunc, void* cbArg )
  1039. {
  1040. cmGrObj_t* op = _cmGrObjHandleToPtr(oh);
  1041. op->f.createCbFunc = cbFunc;
  1042. op->f.createCbArg = cbArg;
  1043. }
  1044. void cmGrObjSetDestroyCb( cmGrObjH_t oh, cmGrDestroyObjCb_t cbFunc, void* cbArg )
  1045. {
  1046. cmGrObj_t* op = _cmGrObjHandleToPtr(oh);
  1047. op->f.destroyCbFunc = cbFunc;
  1048. op->f.destroyCbArg = cbArg;
  1049. }
  1050. void cmGrObjSetRenderCb( cmGrObjH_t oh, cmGrRenderObjCb_t cbFunc, void* cbArg )
  1051. {
  1052. cmGrObj_t* op = _cmGrObjHandleToPtr(oh);
  1053. op->f.renderCbFunc = cbFunc;
  1054. op->f.renderCbArg = cbArg;
  1055. }
  1056. void cmGrObjSetDistanceCb( cmGrObjH_t oh, cmGrDistanceObjCb_t cbFunc, void* cbArg )
  1057. {
  1058. cmGrObj_t* op = _cmGrObjHandleToPtr(oh);
  1059. op->f.distanceCbFunc = cbFunc;
  1060. op->f.distanceCbArg = cbArg;
  1061. }
  1062. void cmGrObjSetEventCb( cmGrObjH_t oh, cmGrEventObjCb_t cbFunc, void* cbArg )
  1063. {
  1064. cmGrObj_t* op = _cmGrObjHandleToPtr(oh);
  1065. op->f.eventCbFunc = cbFunc;
  1066. op->f.eventCbArg = cbArg;
  1067. }
  1068. void cmGrObjSetVExtCb( cmGrObjH_t oh, cmGrVExtObjCb_t cbFunc, void* cbArg )
  1069. {
  1070. cmGrObj_t* op = _cmGrObjHandleToPtr(oh);
  1071. op->f.vextCbFunc = cbFunc;
  1072. op->f.vextCbArg = cbArg;
  1073. }
  1074. void cmGrObjSetIsInsideCb( cmGrObjH_t oh, cmGrIsInsideObjCb_t cbFunc, void* cbArg )
  1075. {
  1076. cmGrObj_t* op = _cmGrObjHandleToPtr(oh);
  1077. op->f.isInsideCbFunc = cbFunc;
  1078. op->f.isInsideCbArg = cbArg;
  1079. }
  1080. cmGrCreateObjCb_t cmGrObjCreateCbFunc( cmGrObjH_t oh )
  1081. {
  1082. cmGrObj_t* op = _cmGrObjHandleToPtr(oh);
  1083. return op->f.createCbFunc;
  1084. }
  1085. cmGrDestroyObjCb_t cmGrObjDestroyCbFunc( cmGrObjH_t oh )
  1086. {
  1087. cmGrObj_t* op = _cmGrObjHandleToPtr(oh);
  1088. return op->f.destroyCbFunc;
  1089. }
  1090. cmGrRenderObjCb_t cmGrObjRenderCbFunc( cmGrObjH_t oh )
  1091. {
  1092. cmGrObj_t* op = _cmGrObjHandleToPtr(oh);
  1093. return op->f.renderCbFunc;
  1094. }
  1095. cmGrDistanceObjCb_t cmGrObjDistanceCbFunc( cmGrObjH_t oh )
  1096. {
  1097. cmGrObj_t* op = _cmGrObjHandleToPtr(oh);
  1098. return op->f.distanceCbFunc;
  1099. }
  1100. cmGrEventObjCb_t cmGrObjEventCbFunc( cmGrObjH_t oh )
  1101. {
  1102. cmGrObj_t* op = _cmGrObjHandleToPtr(oh);
  1103. return op->f.eventCbFunc;
  1104. }
  1105. cmGrVExtObjCb_t cmGrObjVExtCbFunc( cmGrObjH_t oh )
  1106. {
  1107. cmGrObj_t* op = _cmGrObjHandleToPtr(oh);
  1108. return op->f.vextCbFunc;
  1109. }
  1110. cmGrIsInsideObjCb_t cmGrObjIsInsideCbFunc( cmGrObjH_t oh )
  1111. {
  1112. cmGrObj_t* op = _cmGrObjHandleToPtr(oh);
  1113. return op->f.isInsideCbFunc;
  1114. }
  1115. void* cmGrObjCreateCbArg( cmGrObjH_t oh )
  1116. {
  1117. cmGrObj_t* op = _cmGrObjHandleToPtr(oh);
  1118. return op->f.createCbArg;
  1119. }
  1120. void* cmGrObjDestroyCbArg( cmGrObjH_t oh )
  1121. {
  1122. cmGrObj_t* op = _cmGrObjHandleToPtr(oh);
  1123. return op->f.createCbArg;
  1124. }
  1125. void* cmGrObjRenderCbArg( cmGrObjH_t oh )
  1126. {
  1127. cmGrObj_t* op = _cmGrObjHandleToPtr(oh);
  1128. return op->f.destroyCbArg;
  1129. }
  1130. void* cmGrObjDistanceCbArg( cmGrObjH_t oh )
  1131. {
  1132. cmGrObj_t* op = _cmGrObjHandleToPtr(oh);
  1133. return op->f.distanceCbArg;
  1134. }
  1135. void* cmGrObjEventCbArg( cmGrObjH_t oh )
  1136. {
  1137. cmGrObj_t* op = _cmGrObjHandleToPtr(oh);
  1138. return op->f.eventCbArg;
  1139. }
  1140. void* cmGrObjVExtCbArg( cmGrObjH_t oh )
  1141. {
  1142. cmGrObj_t* op = _cmGrObjHandleToPtr(oh);
  1143. return op->f.vextCbArg;
  1144. }
  1145. void* cmGrObjIsInsideCbArg( cmGrObjH_t oh )
  1146. {
  1147. cmGrObj_t* op = _cmGrObjHandleToPtr(oh);
  1148. return op->f.isInsideCbArg;
  1149. }
  1150. void cmGrObjLocalVExt( cmGrH_t h, cmGrObjH_t oh, cmGrVExt_t* vext )
  1151. {
  1152. cmGrObj_t* op = _cmGrObjHandleToPtr(oh);
  1153. return _cmGrObjCbVExt( _cmGrHandleToPtr(h), op, vext);
  1154. }
  1155. cmGrObj_t* _cmGrObjIdToHandle( cmGrObj_t* op, unsigned id )
  1156. {
  1157. cmGrObj_t* rp = NULL;
  1158. if( op->id == id )
  1159. return op;
  1160. if( op->children != NULL )
  1161. if((rp = _cmGrObjIdToHandle(op->children,id)) != NULL )
  1162. return rp;
  1163. if( op->rsib != NULL )
  1164. if((rp = _cmGrObjIdToHandle(op->rsib,id)) != NULL )
  1165. return rp;
  1166. return NULL;
  1167. }
  1168. cmGrObjH_t cmGrObjIdToHandle( cmGrH_t h, unsigned id )
  1169. {
  1170. cmGr_t* p = _cmGrHandleToPtr(h);
  1171. cmGrObjH_t oh = cmGrObjNullHandle;
  1172. cmGrObj_t* op;
  1173. if((op = _cmGrObjIdToHandle(p->objs,id)) != NULL )
  1174. oh.h = op;
  1175. return oh;
  1176. }
  1177. // Move 'aoH' such that it is above 'boH' in the z-order.
  1178. // This means that 'boH' must be drawn before 'aoH'.
  1179. // This algorithm is designed to not break object hierarchies
  1180. // when moving objects. It achieves this by only moving
  1181. // the ancestor objects of boH and aoH at the level where
  1182. // they do not share a common ancestor.
  1183. void cmGrObjDrawAbove( cmGrObjH_t boH, cmGrObjH_t aoH )
  1184. {
  1185. cmGrObj_t* bp = _cmGrObjHandleToPtr(boH);
  1186. cmGrObj_t* ap = _cmGrObjHandleToPtr(aoH);
  1187. cmGrObj_t* rp = bp;
  1188. // set rp to the root object
  1189. while( rp->parent != NULL )
  1190. rp=rp->parent;
  1191. while(1)
  1192. {
  1193. cmGrObj_t* a[] = {NULL,NULL};
  1194. cmGrObj_t* bpp = NULL;
  1195. cmGrObj_t* app = NULL;
  1196. unsigned i = 0;
  1197. rp = rp->children;
  1198. for(; rp!=NULL; rp=rp->rsib)
  1199. {
  1200. if( bp==rp || _cmGrObjIsAncestor(rp,bp) )
  1201. {
  1202. assert( a[i]==NULL );
  1203. bpp = rp;
  1204. a[i++] = rp;
  1205. if( i==2 )
  1206. break;
  1207. }
  1208. if( ap==rp || _cmGrObjIsAncestor(rp,ap) )
  1209. {
  1210. assert( a[i]==NULL );
  1211. app = rp;
  1212. a[i++] = rp;
  1213. if( i==2 )
  1214. break;
  1215. }
  1216. }
  1217. assert( rp != NULL && i==2 );
  1218. // bpp and app share the same ancestor - keep looking
  1219. // for the level where the they do not share same ancestor
  1220. if( bpp == app )
  1221. rp = bpp;
  1222. else
  1223. {
  1224. // if bp is not already being drawn before ap
  1225. if( a[0] != bpp )
  1226. {
  1227. _cmGrObjUnlink(app);
  1228. _cmGrObjInsertOnRight(app,bpp,bpp->parent);
  1229. }
  1230. return;
  1231. }
  1232. }
  1233. }
  1234. void cmGrObjReport( cmGrH_t h, cmGrObjH_t oh, cmRpt_t* rpt )
  1235. {
  1236. cmGrObj_t* op = _cmGrObjHandleToPtr(oh);
  1237. _cmGrObjReport(_cmGrHandleToPtr(h),op,rpt);
  1238. }
  1239. void cmGrObjReportR( cmGrH_t h, cmGrObjH_t oh, cmRpt_t* rpt )
  1240. {
  1241. cmGrObj_t* op = _cmGrObjHandleToPtr(oh);
  1242. _cmGrObjReportR(_cmGrHandleToPtr(h),op,rpt);
  1243. }
  1244. //====================================================================================================
  1245. //====================================================================================================
  1246. #define _cmGr_X_VperP(p) (p->vext.sz.w / (p->pext.sz.w-1) )
  1247. #define _cmGr_Y_VperP(p) (p->vext.sz.h / (p->pext.sz.h-1) )
  1248. #define _cmGr_X_PperV(p) ((p->pext.sz.w-1) / p->vext.sz.w )
  1249. #define _cmGr_Y_PperV(p) ((p->pext.sz.h-1) / p->vext.sz.h )
  1250. int _cmGr_X_VtoP( cmGr_t* p, cmGrV_t vx )
  1251. { return p->pext.loc.x + lround( (vx - p->vext.loc.x) * _cmGr_X_PperV(p)); }
  1252. int _cmGr_Y_VtoP(cmGr_t* p, cmGrV_t vy )
  1253. { return p->pext.loc.y + (p->pext.sz.h-1) + lround(-(vy - p->vext.loc.y) * _cmGr_Y_PperV(p) ); }
  1254. cmGrV_t _cmGr_X_PtoV( cmGr_t* p, int px )
  1255. { return p->vext.loc.x + (px - p->pext.loc.x) * _cmGr_X_VperP(p); }
  1256. cmGrV_t _cmGr_Y_PtoV( cmGr_t* p, int py )
  1257. { return p->vext.loc.y + (p->pext.loc.y + (p->pext.sz.h-1) - py) * _cmGr_Y_VperP(p); }
  1258. #define _cmGrParentToLocalX( op, vext, x ) (op)->wext.loc.x + ((x) - (vext).loc.x) * (op)->wext.sz.w / (vext).sz.w
  1259. #define _cmGrParentToLocalY( op, vext, y ) (op)->wext.loc.y + ((y) - (vext).loc.y) * (op)->wext.sz.h / (vext).sz.h
  1260. #define _cmGrLocalToParentX( op, vext, x ) (vext).loc.x + ((x) - (op)->wext.loc.x) * (vext).sz.w / (op)->wext.sz.w
  1261. #define _cmGrLocalToParentY( op, vext, y ) (vext).loc.y + ((y) - (op)->wext.loc.y) * (vext).sz.h / (op)->wext.sz.h
  1262. // On input x,y are in the same coord's as op->vext.
  1263. // On output pt is converted to op's internal coord system (i.e. the pt is inside op->wext)
  1264. // Using pt as the src and dst is always safe. (i.e. _cmGrLocalToParent(p,op,pt->x,pt->y,pt) is safe.)
  1265. bool _cmGrParentToLocal( cmGr_t* p, cmGrObj_t* op, cmGrV_t x, cmGrV_t y, cmGrVPt_t* pt )
  1266. {
  1267. cmGrVExt_t vext;
  1268. _cmGrObjCbVExt(p,op,&vext);
  1269. if( cmGrVExtIsNullOrEmpty(&vext) )
  1270. return false;
  1271. pt->x = _cmGrParentToLocalX( op, vext, x);
  1272. pt->y = _cmGrParentToLocalY( op, vext, y );
  1273. //pt->x = op->wext.loc.x + (x - vext.loc.x) * op->wext.sz.w / vext.sz.w;
  1274. //pt->y = op->wext.loc.y + (y - vext.loc.y) * op->wext.sz.h / vext.sz.h;
  1275. return true;
  1276. }
  1277. // On input x,y are in the same coords as op->wext.
  1278. // On output pt is converted to be in the same coord's as op->vext (i.e.the pt is inside op->parent->wext)
  1279. // Using pt as the src and dst is always safe. (i.e. _cmGrLocalToParent(p,op,pt->x,pt->y,pt) is safe.)
  1280. void _cmGrLocalToParent( cmGr_t* p, cmGrObj_t* op, cmGrV_t x, cmGrV_t y, cmGrVPt_t* pt )
  1281. {
  1282. cmGrVExt_t vext;
  1283. _cmGrObjCbVExt(p,op,&vext);
  1284. pt->x = _cmGrLocalToParentX(op,vext, x);
  1285. pt->y = _cmGrLocalToParentY(op,vext, y);
  1286. //pt->x = vext.loc.x + (x - op->wext.loc.x) * vext.sz.w / op->wext.sz.w;
  1287. //pt->y = vext.loc.y + (y - op->wext.loc.y) * vext.sz.h / op->wext.sz.h;
  1288. }
  1289. // On input x is in coord's inside op->wext.
  1290. // Return is in phys coord's
  1291. int _cmGrX_VtoP( cmGr_t* p, cmGrObj_t* op, cmGrV_t x )
  1292. {
  1293. cmGrVExt_t vext;
  1294. for(; op->parent != NULL; op=op->parent )
  1295. {
  1296. _cmGrObjCbVExt(p,op,&vext);
  1297. x = _cmGrLocalToParentX(op->parent,vext,x);
  1298. }
  1299. return _cmGr_X_VtoP(p,x);
  1300. }
  1301. // On input y is in coord's inside op->wext.
  1302. // Return is in phys coord's
  1303. int _cmGrY_VtoP( cmGr_t* p, cmGrObj_t* op, cmGrV_t y )
  1304. {
  1305. cmGrVExt_t vext;
  1306. for(; op->parent != NULL; op=op->parent )
  1307. {
  1308. _cmGrObjCbVExt(p,op,&vext);
  1309. y = _cmGrLocalToParentY(op->parent,vext,y);
  1310. }
  1311. return _cmGr_Y_VtoP(p,y);
  1312. }
  1313. // On input x,y are coord's inside op->wext.
  1314. // On output rp is in physical coord's
  1315. void _cmGrXY_VtoP( cmGr_t* p, cmGrObj_t* op, cmGrV_t x, cmGrV_t y, cmGrPPt_t* rp )
  1316. {
  1317. cmGrVPt_t pt;
  1318. cmGrVPtSet(&pt,x,y);
  1319. for(; op->parent != NULL; op=op->parent )
  1320. _cmGrLocalToParent(p,op->parent,pt.x,pt.y,&pt);
  1321. rp->x = _cmGr_X_VtoP(p,pt.x);
  1322. rp->y = _cmGr_Y_VtoP(p,pt.y);
  1323. }
  1324. // pt is converted from the root obj coord system to be in the same coord's
  1325. // as op->vext (inside of op->parent->wext)
  1326. void _cmGrXY_GlobalToLocal( cmGr_t* p, cmGrObj_t* op, cmGrVPt_t* pt )
  1327. {
  1328. if( op->parent != NULL )
  1329. _cmGrXY_GlobalToLocal(p,op->parent,pt);
  1330. // convert from parent coord to child coords
  1331. _cmGrParentToLocal(p,op,pt->x,pt->y,pt);
  1332. }
  1333. // On input x,y are in physical coordindates.
  1334. // On output rp is inside op->parent->wext (the same coord's as op->vext)
  1335. void _cmGrXY_PtoV( cmGr_t* p, cmGrObj_t* op, int px, int py, cmGrVPt_t* rp )
  1336. {
  1337. // convert the phys points to points in the root coord system
  1338. rp->x = _cmGr_X_PtoV(p,px);
  1339. rp->y = _cmGr_Y_PtoV(p,py);
  1340. _cmGrXY_GlobalToLocal(p, op, rp );
  1341. }
  1342. int cmGrX_VtoP( cmGrH_t hh, cmGrObjH_t oh, cmGrV_t x )
  1343. {
  1344. cmGr_t* p = _cmGrHandleToPtr(hh);
  1345. cmGrObj_t* op = _cmGrObjHandleToPtr(oh);
  1346. return _cmGrX_VtoP(p,op,x);
  1347. }
  1348. int cmGrY_VtoP( cmGrH_t hh, cmGrObjH_t oh, cmGrV_t y )
  1349. {
  1350. cmGr_t* p = _cmGrHandleToPtr(hh);
  1351. cmGrObj_t* op = _cmGrObjHandleToPtr(oh);
  1352. return _cmGrY_VtoP(p,op,y);
  1353. }
  1354. void cmGrXY_VtoP( cmGrH_t h, cmGrObjH_t oh, cmGrV_t x, cmGrV_t y, cmGrPPt_t* rp )
  1355. { _cmGrXY_VtoP(_cmGrHandleToPtr(h), _cmGrObjHandleToPtr(oh), x, y, rp ); }
  1356. void cmGrXYWH_VtoP( cmGrH_t hh, cmGrObjH_t oh, cmGrV_t x, cmGrV_t y, cmGrV_t w, cmGrV_t h, cmGrPExt_t* pext )
  1357. {
  1358. cmGr_t* p = _cmGrHandleToPtr(hh);
  1359. cmGrObj_t* op = _cmGrObjHandleToPtr(oh);
  1360. cmGrPPt_t pt0,pt1;
  1361. _cmGrXY_VtoP(p,op,x, y, &pt0);
  1362. _cmGrXY_VtoP(p,op,x+w,y+h,&pt1);
  1363. cmGrPExtSetD(pext,pt0.x,pt0.y,pt1.x,pt1.y);
  1364. }
  1365. void cmGrVExt_VtoP( cmGrH_t hh, cmGrObjH_t oh, const cmGrVExt_t* vext, cmGrPExt_t* pext )
  1366. { cmGrXYWH_VtoP(hh,oh,vext->loc.x,vext->loc.y,vext->sz.w,vext->sz.h,pext); }
  1367. void cmGrXY_PtoV( cmGrH_t h, cmGrObjH_t oh, int x, int y, cmGrVPt_t* rp )
  1368. { _cmGrXY_PtoV(_cmGrHandleToPtr(h), _cmGrObjHandleToPtr(oh), x, y, rp ); }
  1369. void cmGrXYWH_PtoV( cmGrH_t hh, cmGrObjH_t oh, int x, int y, int w, int h, cmGrVExt_t* vext )
  1370. {
  1371. cmGr_t* p = _cmGrHandleToPtr(hh);
  1372. cmGrObj_t* op = _cmGrObjHandleToPtr(oh);
  1373. cmGrVPt_t pt0,pt1;
  1374. _cmGrXY_PtoV(p,op,x,y,&pt0);
  1375. _cmGrXY_PtoV(p,op,x+w-1,y+h-1,&pt1);
  1376. cmGrVExtSetD(vext,pt0.x,pt0.y,pt1.x,pt1.y);
  1377. }
  1378. void cmGrPExt_PtoV( cmGrH_t hh, cmGrObjH_t oh, const cmGrPExt_t* pext, cmGrVExt_t* vext )
  1379. { cmGrXYWH_PtoV(hh,oh,pext->loc.x,pext->loc.y,pext->sz.w,pext->sz.h,vext); }
  1380. void cmGrDrawVLine( cmGrH_t h, cmGrDcH_t dcH, cmGrObjH_t oh, cmGrV_t x0, cmGrV_t y0, cmGrV_t x1, cmGrV_t y1 )
  1381. {
  1382. cmGrPPt_t loc0;
  1383. cmGrPPt_t loc1;
  1384. cmGrXY_VtoP(h,oh,x0,y0,&loc0);
  1385. cmGrXY_VtoP(h,oh,x1,y1,&loc1);
  1386. cmGrDcDrawLine(dcH,loc0.x,loc0.y,loc1.x,loc1.y);
  1387. }
  1388. void cmGrDrawVRect( cmGrH_t hh, cmGrDcH_t dcH, cmGrObjH_t oh, cmGrV_t x, cmGrV_t y, cmGrV_t w, cmGrV_t h )
  1389. {
  1390. cmGrDrawVLine(hh,dcH,oh,x, y, x, y+h);
  1391. cmGrDrawVLine(hh,dcH,oh,x, y+h,x+w,y+h);
  1392. cmGrDrawVLine(hh,dcH,oh,x+w,y+h,x+w,y);
  1393. cmGrDrawVLine(hh,dcH,oh,x+w,y, x, y);
  1394. }
  1395. //====================================================================================================
  1396. //====================================================================================================
  1397. cmGrRC_t _cmGrDestroy( cmGr_t* p )
  1398. {
  1399. cmGrRC_t rc = kOkGrRC;
  1400. if( p->objs != NULL )
  1401. {
  1402. // destroy the root object and all of it's children
  1403. if((rc = _cmGrObjDestroy(p,p->objs)) != kOkGrRC )
  1404. return rc;
  1405. }
  1406. cmGrSync_t* sp = p->syncs;
  1407. while( sp != NULL )
  1408. {
  1409. cmGrH_t h;
  1410. h.h = p;
  1411. cmGrSync_t* np = sp->link;
  1412. // break sync with any mutually sync'ed gr's to prevent
  1413. // attempted calls to this gr.
  1414. cmGrSetSync( sp->grH, h, 0 );
  1415. cmMemFree(sp);
  1416. sp = np;
  1417. }
  1418. p->syncs = NULL;
  1419. cmLHeapDestroy(&p->lhH);
  1420. cmMemPtrFree(&p->img);
  1421. cmMemFree(p);
  1422. return rc;
  1423. }
  1424. void _cmGrObjRootVExt( cmGrObjFuncArgs_t* args, cmGrVExt_t* vext )
  1425. {
  1426. // the root object's virtual extent is the same as it's world extent
  1427. cmGrObjWorldExt( args->objH, vext );
  1428. }
  1429. bool _cmGrObjRootIsInside( cmGrObjFuncArgs_t* args, int px, int py, cmGrV_t vx, cmGrV_t vy )
  1430. {
  1431. cmGrVExt_t vext;
  1432. _cmGrObjRootVExt(args,&vext);
  1433. return cmGrVExtIsXyInside(&vext,vx,vy);
  1434. }
  1435. void _cmGrSetCfgFlags( cmGr_t* p, unsigned flags )
  1436. {
  1437. p->cfgFlags = flags;
  1438. // kSelectHorzFl and kSelectVertFl are mutually exclusive
  1439. if( cmIsFlag(p->cfgFlags,kSelectHorzGrFl) )
  1440. p->cfgFlags = cmClrFlag(p->cfgFlags,kSelectVertGrFl);
  1441. }
  1442. void _cmGrCallback( cmGr_t* p, cmGrCbId_t id, unsigned eventFlags, cmGrKeyCodeId_t keycode )
  1443. {
  1444. if( p->cbFunc != NULL )
  1445. {
  1446. cmGrH_t h;
  1447. h.h = p;
  1448. p->cbFunc(p->cbArg,h,id,eventFlags,keycode);
  1449. }
  1450. }
  1451. cmGrRC_t cmGrCreate( cmCtx_t* ctx, cmGrH_t* hp, unsigned id, unsigned cfgFlags, cmGrCbFunc_t cbFunc, void* cbArg, const cmGrVExt_t* wext )
  1452. {
  1453. cmGrRC_t rc = kOkGrRC;
  1454. cmGrVExt_t null_ext;
  1455. cmGrObjH_t rootObjH = cmGrObjNullHandle;
  1456. if(( rc = cmGrDestroy(hp)) != kOkGrRC )
  1457. return rc;
  1458. // create the cmGr_t
  1459. cmGr_t* p = cmMemAllocZ(cmGr_t,1);
  1460. p->ctx = *ctx;
  1461. p->id = id;
  1462. p->stateFlags = kDirtyGrFl;
  1463. p->cbFunc = cbFunc;
  1464. p->cbArg = cbArg;
  1465. _cmGrSetCfgFlags(p,cfgFlags);
  1466. if( wext == NULL )
  1467. {
  1468. cmGrVExtSetNull(&null_ext);
  1469. wext = &null_ext;
  1470. }
  1471. cmErrSetup(&p->err,&ctx->rpt,"cmGr");
  1472. if( cmLHeapIsValid( p->lhH = cmLHeapCreate(8192,ctx)) == false )
  1473. {
  1474. rc = cmErrMsg(&p->err,kLHeapFailGrRC,"Linked heap create failed.");
  1475. goto errLabel;
  1476. }
  1477. cmGrVExtSetEmpty(&p->vext);
  1478. cmGrPExtSetEmpty(&p->pext);
  1479. hp->h = p;
  1480. // create the root object
  1481. cmGrObjFunc_t funcs;
  1482. memset(&funcs,0,sizeof(funcs));
  1483. funcs.vextCbFunc = _cmGrObjRootVExt;
  1484. funcs.isInsideCbFunc = _cmGrObjRootIsInside;
  1485. if((rc = cmGrObjCreate(*hp, &rootObjH, cmGrObjNullHandle, &funcs, cmInvalidId, 0, wext )) != kOkGrRC )
  1486. {
  1487. rc = cmErrMsg(&p->err,kRootObjCreateFailGrRC,"The root object creation failed.");
  1488. goto errLabel;
  1489. }
  1490. // create the default color map
  1491. _cmGrRgbInitDefaultColorMap(p);
  1492. p->objs = _cmGrObjHandleToPtr(rootObjH);
  1493. p->rootObj = p->objs;
  1494. _cmGrCallback(p,kCreateCbGrId,0,kInvalidKeyCodeGrId);
  1495. errLabel:
  1496. if( rc != kOkGrRC )
  1497. {
  1498. _cmGrDestroy(p);
  1499. hp->h = NULL;
  1500. }
  1501. return rc;
  1502. }
  1503. cmGrRC_t cmGrDestroy( cmGrH_t* hp )
  1504. {
  1505. cmGrRC_t rc = kOkGrRC;
  1506. if( hp==NULL || cmGrIsValid(*hp) == false )
  1507. return kOkGrRC;
  1508. cmGr_t* p = _cmGrHandleToPtr(*hp);
  1509. if((rc = _cmGrDestroy(p)) != kOkGrRC )
  1510. goto errLabel;
  1511. hp->h = NULL;
  1512. errLabel:
  1513. return rc;
  1514. }
  1515. // Destroy all objects (except the root object)
  1516. cmGrRC_t _cmGrObjDestroyAll( cmGr_t* p )
  1517. {
  1518. cmGrObj_t* op = p->objs;
  1519. if( op != NULL )
  1520. {
  1521. op = op->children;
  1522. while( op != NULL )
  1523. {
  1524. cmGrObj_t* np = op->rsib;
  1525. _cmGrObjUnlinkAndFree(p,op);
  1526. op = np;
  1527. }
  1528. }
  1529. return kOkGrRC;
  1530. }
  1531. cmGrRC_t cmGrClear( cmGrH_t h )
  1532. {
  1533. cmGrRC_t rc;
  1534. cmGr_t* p = _cmGrHandleToPtr(h);
  1535. if((rc = _cmGrObjDestroyAll(p)) != kOkGrRC )
  1536. return rc;
  1537. p->rootObj = p->objs;
  1538. p->stateFlags = kDirtyGrFl;
  1539. cmGrVExtSetEmpty(&p->vext);
  1540. p->msDnObj = NULL;
  1541. cmGrPPtSet(&p->msDnPPt,0,0);
  1542. cmGrVPtSet(&p->msDnVPt,0,0);
  1543. cmGrVPtSet(&p->msVPt,0,0);
  1544. cmGrVSzSet(&p->msDnVOffs,0,0);
  1545. p->selValidFl = false;
  1546. cmGrVPtSet(&p->sel0Pt,0,0);
  1547. cmGrVPtSet(&p->sel1Pt,0,0);
  1548. cmGrVPtSet(&p->localPt,0,0);
  1549. cmGrVPtSet(&p->globalPt,0,0);
  1550. cmGrVExtSetNull(&p->rootObj->wext);
  1551. return rc;
  1552. }
  1553. cmGrObjH_t cmGrRootObjH( cmGrH_t h )
  1554. {
  1555. cmGr_t* p = _cmGrHandleToPtr(h);
  1556. cmGrObjH_t oh;
  1557. oh.h = p->rootObj;
  1558. return oh;
  1559. }
  1560. unsigned cmGrCfgFlags( cmGrH_t h )
  1561. {
  1562. cmGr_t* p = _cmGrHandleToPtr(h);
  1563. return p->cfgFlags;
  1564. }
  1565. void cmGrSetCfgFlags( cmGrH_t h, unsigned cfgFlags )
  1566. {
  1567. cmGr_t* p = _cmGrHandleToPtr(h);
  1568. _cmGrSetCfgFlags(p,cfgFlags);
  1569. }
  1570. void _cmGrObjDraw( cmGr_t* p, cmGrObj_t* op, cmGrDcH_t dcH )
  1571. {
  1572. _cmGrObjCbRender(p,dcH,op);
  1573. if( op->children != NULL )
  1574. _cmGrObjDraw(p,op->children,dcH);
  1575. if( op->rsib != NULL )
  1576. _cmGrObjDraw(p,op->rsib,dcH);
  1577. }
  1578. void _cmInvertImage( cmGr_t* p, cmGrDcH_t dcH, const cmGrPExt_t* pext )
  1579. {
  1580. if( cmGrPExtIsNullOrEmpty(pext) )
  1581. return;
  1582. cmGrPExt_t r;
  1583. cmGrPExtIntersect( &r, pext, &p->pext );
  1584. unsigned n = r.sz.w * r.sz.h * 3;
  1585. if( n > 0 )
  1586. {
  1587. unsigned i;
  1588. p->img = cmMemResizeZ(unsigned char,p->img,n);
  1589. //p->dd.read_image(p->ddUser, p->img, r.loc.x, r.loc.y, r.sz.w, r.sz.h );
  1590. cmGrDcReadImage( dcH, p->img, &r );
  1591. for(i=0; i<n; ++i)
  1592. p->img[i] = 255 - p->img[i];
  1593. //p->dd.draw_image(p->ddUser, p->img, r.loc.x, r.loc.y, r.sz.w, r.sz.h);
  1594. cmGrDcDrawImage( dcH, p->img, &r);
  1595. }
  1596. }
  1597. cmGrRC_t cmGrDraw( cmGrH_t h, cmGrDcH_t dcH )
  1598. {
  1599. cmGr_t* p = _cmGrHandleToPtr(h);
  1600. _cmGrObjDraw(p,p->rootObj,dcH);
  1601. cmGrPExt_t pext;
  1602. cmGrVExt_t vext;
  1603. cmGrSelectExtents(h,&vext,&pext);
  1604. if( cmGrPExtIsNotNull(&pext))
  1605. {
  1606. if( pext.sz.w<=1 && pext.sz.h<=1 )
  1607. {
  1608. cmGrPExt_t ipext;
  1609. if( !cmIsFlag(p->cfgFlags,kSelectHorzGrFl) )
  1610. {
  1611. cmGrPExtSet(&ipext,p->pext.loc.x,pext.loc.y,p->pext.sz.w,1);
  1612. _cmInvertImage(p,dcH,&ipext);
  1613. }
  1614. if( !cmIsFlag(p->cfgFlags,kSelectVertGrFl) )
  1615. {
  1616. cmGrPExtSet(&ipext,pext.loc.x,p->pext.loc.y,1,p->pext.sz.h);
  1617. _cmInvertImage(p,dcH,&ipext);
  1618. }
  1619. }
  1620. else
  1621. {
  1622. _cmInvertImage(p,dcH,&pext);
  1623. }
  1624. }
  1625. return kOkGrRC;
  1626. }
  1627. bool _cmGrSetViewExtents( cmGr_t* p, cmGrV_t minx, cmGrV_t miny, cmGrV_t maxx, cmGrV_t maxy )
  1628. {
  1629. cmGrVExt_t vext;
  1630. // load a vext with the new view extents
  1631. cmGrVExtSetD(&vext,minx,miny,maxx,maxy);
  1632. // if the view ext is not changing
  1633. if( cmGrVExtIsEqual(&p->vext,&vext) )
  1634. return false;
  1635. // the root object must exist
  1636. assert( p->rootObj != NULL );
  1637. // the view extents must be in the world extents
  1638. if( cmGrVExtIsExtInside(&p->rootObj->wext,&vext)==false )
  1639. {
  1640. cmErrMsg(&p->err,kInvalidCoordsGrRC,"View extent is not inside the world extents.");
  1641. return false;
  1642. }
  1643. //cmGrVExtPrint("set vw:",&vext);
  1644. p->vext = vext;
  1645. p->stateFlags = cmSetFlag(p->stateFlags,kDirtyGrFl);
  1646. _cmGrCallback(p, kViewExtCbGrId,0,kInvalidKeyCodeGrId );
  1647. // apply changes to synch target
  1648. cmGrSync_t* sp = p->syncs;
  1649. for(; sp!=NULL; sp=sp->link)
  1650. if( cmIsFlag(sp->flags,kViewSyncGrFl) )
  1651. {
  1652. cmGrViewExtents( sp->grH, &vext );
  1653. bool fl = false;
  1654. if( cmIsFlag(sp->flags,kHorzSyncGrFl) )
  1655. {
  1656. fl = true;
  1657. vext.loc.x = p->vext.loc.x;
  1658. vext.sz.w = p->vext.sz.w;
  1659. }
  1660. if( cmIsFlag(sp->flags,kVertSyncGrFl) )
  1661. {
  1662. fl = true;
  1663. vext.loc.y = p->vext.loc.y;
  1664. vext.sz.h = p->vext.sz.h;
  1665. }
  1666. if( fl )
  1667. cmGrSetViewExtentsE( sp->grH, &vext );
  1668. }
  1669. //printf("s:%p %f %f %f %f\n",p,p->vext.loc.x, p->vext.loc.y, p->vext.sz.w, p->vext.sz.h );
  1670. return true;
  1671. }
  1672. bool _cmGrSetScrollH( cmGr_t* p, int x )
  1673. {
  1674. assert( p->rootObj != NULL );
  1675. cmGrV_t vx = p->rootObj->wext.loc.x + (x * p->vext.sz.w / p->pext.sz.w);
  1676. return _cmGrSetViewExtents(p,vx, p->vext.loc.y, vx+p->vext.sz.w, p->vext.loc.y+p->vext.sz.h);
  1677. }
  1678. int _cmGrScrollH( cmGr_t* p )
  1679. { return round((p->vext.loc.x - p->rootObj->wext.loc.x) * p->pext.sz.w / p->vext.sz.w); }
  1680. bool _cmGrSetScrollV( cmGr_t* p, int y )
  1681. {
  1682. assert( p->rootObj != NULL );
  1683. cmGrV_t vy = p->rootObj->wext.loc.y + (y * p->vext.sz.h / p->pext.sz.h);
  1684. return _cmGrSetViewExtents(p, p->vext.loc.x, vy, p->vext.loc.x+p->vext.sz.w, vy + p->vext.sz.h);
  1685. }
  1686. int _cmGrScrollV( cmGr_t* p )
  1687. { return round((p->vext.loc.y - p->rootObj->wext.loc.y) * p->pext.sz.h / p->vext.sz.h); }
  1688. void _cmGrSetSelectPoints(cmGr_t* p, const cmGrVPt_t* pt0, const cmGrVPt_t* pt1)
  1689. {
  1690. bool deltaFl = false;
  1691. p->selValidFl = true;
  1692. if( pt0 != NULL )
  1693. {
  1694. if( cmGrVPtIsNotEqual(&p->sel0Pt,pt0) )
  1695. {
  1696. p->sel0Pt = *pt0;
  1697. deltaFl = true;
  1698. }
  1699. if( pt1 == NULL && cmGrVPtIsNotEqual(&p->sel1Pt,pt0) )
  1700. {
  1701. p->sel1Pt = *pt0;
  1702. deltaFl = true;
  1703. }
  1704. }
  1705. if( pt1 != NULL && cmGrVPtIsNotEqual(&p->sel1Pt,pt1) )
  1706. {
  1707. p->sel1Pt = *pt1;
  1708. deltaFl = true;
  1709. }
  1710. if( !deltaFl )
  1711. return;
  1712. _cmGrCallback(p,kSelectExtCbGrId,0,kInvalidKeyCodeGrId);
  1713. // apply changes to synch target
  1714. cmGrSync_t* sp = p->syncs;
  1715. for(; sp!=NULL; sp=sp->link)
  1716. if( cmIsFlag(sp->flags,kSelectSyncGrFl) )
  1717. {
  1718. cmGrVPt_t pt0, pt1;
  1719. cmGrSelectPoints(sp->grH, &pt0, &pt1 );
  1720. bool fl = false;
  1721. if( cmIsFlag(sp->flags,kHorzSyncGrFl) )
  1722. {
  1723. fl = true;
  1724. pt0.x = p->sel0Pt.x;
  1725. pt1.x = p->sel1Pt.x;
  1726. }
  1727. if( cmIsFlag(sp->flags,kVertSyncGrFl) )
  1728. {
  1729. fl = true;
  1730. pt0.y = p->sel0Pt.y;
  1731. pt1.y = p->sel1Pt.y;
  1732. }
  1733. if( fl )
  1734. cmGrSetSelectPoints( sp->grH, &pt0, &pt1 );
  1735. }
  1736. }
  1737. // vx,vy are in the same coord's as op->vext
  1738. cmGrObj_t* _cmGrFindObjRec( cmGr_t* p, cmGrObj_t* op, int px, int py, cmGrV_t vx, cmGrV_t vy )
  1739. {
  1740. cmGrObj_t* rop = NULL;
  1741. cmGrObj_t* top;
  1742. cmGrVExt_t vext;
  1743. // get the location of op inside op->parent->wext
  1744. _cmGrObjCbVExt(p,op,&vext);
  1745. // is vx,vy inside op - this is equiv to: cmGrVExtIsXyInside(&vext,vx,vy)
  1746. if( _cmGrObjCbIsInside(p,op,px,py,vx,vy) )
  1747. rop = op;
  1748. if( op->children != NULL )
  1749. {
  1750. cmGrVPt_t pt;
  1751. if( _cmGrParentToLocal(p,op,vx,vy,&pt) )
  1752. if((top = _cmGrFindObjRec(p,op->children,px,py,vx,vy)) != NULL )
  1753. rop = top;
  1754. }
  1755. if( op->rsib != NULL )
  1756. if((top = _cmGrFindObjRec(p,op->rsib,px,py,vx,vy)) != NULL )
  1757. rop = top;
  1758. return rop;
  1759. }
  1760. bool cmGrEvent( cmGrH_t h, unsigned flags, cmGrKeyCodeId_t key, int px, int py )
  1761. {
  1762. bool fl = false;
  1763. cmGr_t* p = _cmGrHandleToPtr(h);
  1764. cmGrObj_t* op;
  1765. cmGrVPtSet(&p->localPt,0,0);
  1766. // convert the phys points to points in the root coord system
  1767. cmGrV_t gx = _cmGr_X_PtoV(p,px);
  1768. cmGrV_t gy = _cmGr_Y_PtoV(p,py);
  1769. cmGrVPtSet(&p->globalPt,gx,gy);
  1770. _cmGrCallback(p,kGlobalPtCbGrId,0,kInvalidKeyCodeGrId);
  1771. // find the obj under the mouse
  1772. if((op = _cmGrFindObjRec(p,p->rootObj,px,py,gx,gy)) != NULL )
  1773. {
  1774. // convert gx,gy to be inside op->wext
  1775. cmGrVPtSet(&p->localPt,gx,gy);
  1776. _cmGrXY_GlobalToLocal(p,op,&p->localPt);
  1777. _cmGrCallback(p,kLocalPtCbGrId,0,kInvalidKeyCodeGrId);
  1778. }
  1779. if( (flags&kEvtMask)==kKeyUpGrFl )
  1780. _cmGrCallback(p,kKeyUpCbGrId,flags,key);
  1781. if( (flags&kEvtMask)==kKeyDnGrFl )
  1782. _cmGrCallback(p,kKeyDnCbGrId,flags,key);
  1783. if( op != NULL )
  1784. {
  1785. switch( flags & kEvtMask )
  1786. {
  1787. case kMsDownGrFl:
  1788. // store the phys loc. of the ms dn event
  1789. cmGrPPtSet(&p->msDnPPt,px,py);
  1790. if( op != NULL )
  1791. {
  1792. // if the click was in not in the root object
  1793. if( op->parent != NULL )
  1794. {
  1795. // store the object and coord's where the mouse went down.
  1796. cmGrVExt_t vext;
  1797. p->msDnObj = op; // set the msDnObj
  1798. // convert the phys ms dn point to the virt point inside op->parent.wext
  1799. _cmGrXY_PtoV(p, op->parent, px, py, &p->msDnVPt );
  1800. // set the current ms virt pt
  1801. p->msVPt = p->msDnVPt;
  1802. // get the ms down obj virt extents
  1803. _cmGrObjCbVExt(p,op,&vext);
  1804. // store the offset from the lower left to the ms dn point
  1805. p->msDnVOffs.w = p->msDnVPt.x - vext.loc.x;
  1806. p->msDnVOffs.h = p->msDnVPt.y - vext.loc.y;
  1807. // notify the object that the mouse went down
  1808. fl = _cmGrObjCbEvent(p,op,flags,key,px,py);
  1809. }
  1810. }
  1811. break;
  1812. case kMsUpGrFl:
  1813. {
  1814. cmGrPPt_t upPPt;
  1815. cmGrPPtSet(&upPPt,px,py);
  1816. bool clickFl = cmGrPPtIsEqual(&p->msDnPPt,&upPPt );
  1817. // if a click occured ...
  1818. if( clickFl )
  1819. {
  1820. // ... and the click is in a non-root object ...
  1821. if( p->msDnObj!= NULL && p->msDnObj->parent!=NULL )
  1822. {
  1823. // ... then generate a click event
  1824. unsigned evtFlags = cmClrFlag(flags,kMsUpGrFl) | kMsClickGrFl;
  1825. fl = _cmGrObjCbEvent(p,op,evtFlags,key,px,py);
  1826. }
  1827. else // ... else if the click occurred in the root object
  1828. {
  1829. cmGrVPt_t pt;
  1830. cmGrVPtSet(&pt,gx,gy);
  1831. bool shFl = cmIsFlag(flags,kShiftKeyGrFl);
  1832. _cmGrSetSelectPoints( p, shFl ? NULL : &pt, shFl ? &pt : NULL );
  1833. }
  1834. }
  1835. // notify the object under the mouse that the mouse went up
  1836. if( _cmGrObjCbEvent(p,op,flags,key,px,py) )
  1837. fl = true;
  1838. _cmGrCallback(p,kFocusCbGrId,0,kInvalidKeyCodeGrId);
  1839. p->msDnObj = NULL;
  1840. }
  1841. break;
  1842. case kMsMoveGrFl:
  1843. fl = _cmGrObjCbEvent(p,op,flags,key,px,py);
  1844. break;
  1845. case kMsWheelGrFl:
  1846. break;
  1847. case kMsDragGrFl:
  1848. if( p->msDnObj != NULL )
  1849. {
  1850. // set the current virtual point
  1851. _cmGrXY_PtoV(p, p->msDnObj->parent, px, py, &p->msVPt );
  1852. // callback the dragged object
  1853. fl = _cmGrObjCbEvent(p,p->msDnObj,flags,key,px,py);
  1854. // if the px,py is outside the root phys extents then scroll
  1855. if( !cmGrPExtIsXyInside(&p->pext,px,py) )
  1856. {
  1857. bool hFl = false, vFl=false;
  1858. cmGrPSz_t tot,vis,max;
  1859. cmGrPPt_t pos;
  1860. cmGrScrollExtents(h, &tot, &vis, &max, &pos );
  1861. if( px < cmGrPExtL(&p->pext) )
  1862. hFl = _cmGrSetScrollH(p, cmMax(0, _cmGrScrollH(p) - (cmGrPExtL(&p->pext) - px)));
  1863. else
  1864. if( px > cmGrPExtR(&p->pext) )
  1865. hFl = _cmGrSetScrollH(p, cmMin(max.w, _cmGrScrollH(p) + (px - cmGrPExtR(&p->pext))));
  1866. if( py < cmGrPExtT(&p->pext) )
  1867. vFl = _cmGrSetScrollV(p, cmMax(0, _cmGrScrollV(p) - (cmGrPExtT(&p->pext) - py)));
  1868. else
  1869. if( py > cmGrPExtB(&p->pext) )
  1870. vFl = _cmGrSetScrollV(p, cmMin(max.h, _cmGrScrollV(p) + (py - cmGrPExtB(&p->pext))));
  1871. fl = fl || vFl || hFl;
  1872. }
  1873. }
  1874. break;
  1875. case kKeyDnGrFl:
  1876. case kKeyUpGrFl:
  1877. //fl = _cmGrObjCbEvent(p,p->msDnObj,flags,key,px,py);
  1878. break;
  1879. }
  1880. }
  1881. return fl;
  1882. }
  1883. bool cmGrIsValid( cmGrH_t h )
  1884. { return h.h != NULL; }
  1885. unsigned cmGrId( cmGrH_t h )
  1886. {
  1887. cmGr_t* p = _cmGrHandleToPtr(h);
  1888. return p->id;
  1889. }
  1890. const cmGrVPt_t* cmGrGlobalPt( cmGrH_t h )
  1891. {
  1892. cmGr_t* p = _cmGrHandleToPtr(h);
  1893. return &p->globalPt;
  1894. }
  1895. const cmGrVPt_t* cmGrLocalPt( cmGrH_t h )
  1896. {
  1897. cmGr_t* p = _cmGrHandleToPtr(h);
  1898. return &p->localPt;
  1899. }
  1900. bool cmGrSetViewExtents( cmGrH_t h, cmGrV_t minx, cmGrV_t miny, cmGrV_t maxx, cmGrV_t maxy )
  1901. { return _cmGrSetViewExtents( _cmGrHandleToPtr(h), minx,miny,maxx,maxy); }
  1902. bool cmGrSetViewExtentsE( cmGrH_t h, const cmGrVExt_t* e )
  1903. { return cmGrSetViewExtents( h, cmGrVExtMinX(e), cmGrVExtMinY(e), cmGrVExtMaxX(e), cmGrVExtMaxY(e) ); }
  1904. void cmGrViewExtents( cmGrH_t h, cmGrVExt_t* vext )
  1905. {
  1906. cmGr_t* p = _cmGrHandleToPtr(h);
  1907. *vext = p->vext;
  1908. //printf("g0:%p %f %f %f %f\n",p,p->vext.loc.x, p->vext.loc.y, p->vext.sz.w, p->vext.sz.h );
  1909. //printf("g1:%p %f %f %f %f\n",p,vext->loc.x, vext->loc.y, vext->sz.w, vext->sz.h );
  1910. }
  1911. bool cmGrSetPhysExtents( cmGrH_t hh, int x, int y, int w, int h )
  1912. {
  1913. cmGr_t* p = _cmGrHandleToPtr(hh);
  1914. cmGrPExt_t pext;
  1915. cmGrPExtSet(&pext,x,y,w,h);
  1916. assert( cmGrPExtIsNull(&pext)==false );
  1917. if( cmGrPExtIsEqual(&pext,&p->pext) )
  1918. return false;
  1919. p->pext = pext;
  1920. p->stateFlags = cmSetFlag(p->stateFlags,kDirtyGrFl);
  1921. _cmGrCallback(p,kPhysExtCbGrId,0,kInvalidKeyCodeGrId);
  1922. //cmGrPExtPrint("pext",&p->pext);
  1923. return true;
  1924. }
  1925. bool cmGrSetPhysExtentsE(cmGrH_t h, const cmGrPExt_t* e )
  1926. { return cmGrSetPhysExtents(h, cmGrPExtL(e), cmGrPExtT(e), cmGrPExtW(e), cmGrPExtH(e) ); }
  1927. void cmGrPhysExtents( cmGrH_t h, cmGrPExt_t* exts )
  1928. {
  1929. cmGr_t* p = _cmGrHandleToPtr(h);
  1930. *exts = p->pext;
  1931. }
  1932. void cmGrScrollExtents( cmGrH_t h, cmGrPSz_t* tot, cmGrPSz_t* vis, cmGrPSz_t* max, cmGrPPt_t* pos )
  1933. {
  1934. cmGr_t* p = _cmGrHandleToPtr(h);
  1935. assert( p->rootObj != NULL );
  1936. if( tot != NULL )
  1937. {
  1938. tot->w = round(p->rootObj->wext.sz.w * p->pext.sz.w / p->vext.sz.w);
  1939. tot->h = round(p->rootObj->wext.sz.h * p->pext.sz.h / p->vext.sz.h);
  1940. }
  1941. if( vis != NULL )
  1942. {
  1943. vis->w = round(p->vext.sz.w * p->pext.sz.w / p->vext.sz.w);
  1944. vis->h = round(p->vext.sz.h * p->pext.sz.h / p->vext.sz.h);
  1945. }
  1946. if( max != NULL )
  1947. {
  1948. max->w = tot->w - vis->w;
  1949. max->h = tot->h - vis->h;
  1950. }
  1951. if( pos != NULL )
  1952. {
  1953. pos->x = _cmGrScrollH(p);
  1954. pos->y = _cmGrScrollV(p);
  1955. }
  1956. }
  1957. bool cmGrSetScrollH( cmGrH_t h, int x )
  1958. { return _cmGrSetScrollH( _cmGrHandleToPtr(h), x ); }
  1959. int cmGrScrollH( cmGrH_t h )
  1960. { return _cmGrScrollH( _cmGrHandleToPtr(h) ); }
  1961. bool cmGrSetScrollV( cmGrH_t h, int y )
  1962. { return _cmGrSetScrollV( _cmGrHandleToPtr(h), y ); }
  1963. int cmGrScrollV( cmGrH_t h )
  1964. { return _cmGrScrollV( _cmGrHandleToPtr(h) ); }
  1965. bool cmGrSelectExtents( cmGrH_t h, cmGrVExt_t* vext, cmGrPExt_t* pext )
  1966. {
  1967. cmGrPPt_t pt0,pt1;
  1968. cmGr_t* p = _cmGrHandleToPtr(h);
  1969. if( !p->selValidFl )
  1970. {
  1971. cmGrVExtSetNull(vext);
  1972. cmGrPExtSetNull(pext);
  1973. return false;
  1974. }
  1975. if( p->sel0Pt.x == p->sel1Pt.x && p->sel0Pt.y == p->sel1Pt.y )
  1976. cmGrVExtSet(vext, p->sel0Pt.x, p->sel0Pt.y, 0, 0);
  1977. else
  1978. {
  1979. cmGrV_t gx0=p->sel0Pt.x, gy0=p->sel0Pt.y;
  1980. cmGrV_t gx1=p->sel1Pt.x, gy1=p->sel1Pt.y;
  1981. if( cmIsFlag(p->cfgFlags,kSelectHorzGrFl) )
  1982. {
  1983. gy0 = cmGrVExtMaxY(&p->rootObj->wext);
  1984. gy1 = cmGrVExtMinY(&p->rootObj->wext);
  1985. }
  1986. else
  1987. if( cmIsFlag(p->cfgFlags,kSelectVertGrFl ) )
  1988. {
  1989. gx0 = cmGrVExtMinX(&p->rootObj->wext);
  1990. gx1 = cmGrVExtMaxX(&p->rootObj->wext);
  1991. }
  1992. cmGrVExtSetD(vext,cmMin(gx0,gx1),cmMin(gy0,gy1),cmMax(gx0,gx1),cmMax(gy0,gy1));
  1993. }
  1994. _cmGrXY_VtoP(p, p->rootObj, vext->loc.x, vext->loc.y, &pt0 );
  1995. _cmGrXY_VtoP(p, p->rootObj, vext->loc.x + vext->sz.w, vext->loc.y + vext->sz.h, &pt1 );
  1996. cmGrPExtSetD(pext,cmMin(pt0.x,pt1.x),cmMin(pt0.y,pt1.y),cmMax(pt0.x,pt1.x),cmMax(pt0.y,pt1.y));
  1997. //printf("%f %f %f %f\n",vext->loc.x,vext->loc.y,vext->sz.w,vext->sz.h);
  1998. //printf("%i %i %i %i\n",pext->loc.x,pext->loc.y,pext->sz.w,pext->sz.h);
  1999. return true;
  2000. }
  2001. void cmGrSetSelectPoints( cmGrH_t h, const cmGrVPt_t* pt0, const cmGrVPt_t* pt1 )
  2002. {
  2003. cmGr_t* p = _cmGrHandleToPtr(h);
  2004. _cmGrSetSelectPoints(p,pt0,pt1);
  2005. }
  2006. void cmGrSelectPoints( cmGrH_t h, cmGrVPt_t* pt0, cmGrVPt_t* pt1 )
  2007. {
  2008. cmGr_t* p = _cmGrHandleToPtr(h);
  2009. if( pt0 != NULL )
  2010. *pt0 = p->sel0Pt;
  2011. if( pt1 != NULL )
  2012. *pt1 = p->sel1Pt;
  2013. }
  2014. void cmGrZoom( cmGrH_t h, unsigned flags )
  2015. {
  2016. cmGr_t* p = _cmGrHandleToPtr(h);
  2017. bool hfl = cmIsFlag(flags,kXAxisGrFl);
  2018. bool vfl = cmIsFlag(flags,kYAxisGrFl);
  2019. bool inFl = cmIsFlag(flags,kZoomInGrFl);
  2020. bool allFl = cmIsFlag(flags,kShowAllGrFl);
  2021. double magn = 3.0;
  2022. double ratio = inFl ? 1.0/magn : magn;
  2023. cmGrVPt_t c;
  2024. cmGrVExt_t z;
  2025. cmGrVExt_t v;
  2026. cmGrVExt_t w;
  2027. cmGrVExtSetNull(&z);
  2028. cmGrViewExtents( h,&v); // get the current view extents
  2029. cmGrObjWorldExt( cmGrRootObjH(h),&w); // get the current world extents
  2030. // if show all was requested ...
  2031. if( allFl )
  2032. {
  2033. // .. then the world ext's become the view extents.
  2034. cmGrVExtSetD(&z,
  2035. hfl ? cmGrVExtMinX(&w) : cmGrVExtMinX(&v),
  2036. vfl ? cmGrVExtMinY(&w) : cmGrVExtMinY(&v),
  2037. hfl ? cmGrVExtMaxX(&w) : cmGrVExtMaxX(&v),
  2038. vfl ? cmGrVExtMaxY(&w) : cmGrVExtMaxY(&v));
  2039. }
  2040. else
  2041. {
  2042. // if the selection flag is not set or the selection pt/area is not valid
  2043. if( cmIsNotFlag(flags,kSelectGrFl) || p->selValidFl==false )
  2044. {
  2045. // center the zoom on the current view
  2046. c.x = v.loc.x + v.sz.w/2;
  2047. c.y = v.loc.y + v.sz.h/2;
  2048. }
  2049. else
  2050. {
  2051. // if the selection area is a point
  2052. if( p->sel0Pt.x == p->sel1Pt.x && p->sel0Pt.y == p->sel1Pt.y )
  2053. {
  2054. // center the zoom on the current view
  2055. c.x = p->sel0Pt.x;
  2056. c.y = p->sel1Pt.y;
  2057. }
  2058. else
  2059. {
  2060. cmGrPExt_t dum;
  2061. // The selection area exist - make it the new view area
  2062. // Note that f the selection area is greater than the
  2063. // current view area then this may not be a magnification.
  2064. cmGrSelectExtents(h,&z,&dum);
  2065. }
  2066. }
  2067. // if no zoom area has been created then create
  2068. // one centered on 'c'.
  2069. if( cmGrVExtIsNull(&z) )
  2070. {
  2071. cmGrVExt_t t;
  2072. cmGrV_t zw = v.sz.w * ratio / 2;
  2073. cmGrV_t zh = v.sz.h * ratio / 2;
  2074. cmGrVExtSetD(&t,
  2075. hfl ? c.x-zw : cmGrVExtMinX(&v),
  2076. vfl ? c.y-zh : cmGrVExtMinY(&v),
  2077. hfl ? c.x+zw : cmGrVExtMaxX(&v),
  2078. vfl ? c.y+zh : cmGrVExtMaxY(&v));
  2079. cmGrVExtIntersect(&z,&t,&w);
  2080. }
  2081. }
  2082. //cmGrVExtPrint("w:",&w);
  2083. //cmGrVExtPrint("z:",&z);
  2084. //cmGrVExtPrint("v:",&v);
  2085. assert( cmGrVExtIsNorm(&z));
  2086. cmGrSetViewExtentsE(h,&z);
  2087. }
  2088. void cmGrSetSync( cmGrH_t h, cmGrH_t syncGrH, unsigned flags )
  2089. {
  2090. cmGr_t* p = _cmGrHandleToPtr(h);
  2091. // attempt to locate syncGrH on the sync list
  2092. cmGrSync_t* pp = NULL;
  2093. cmGrSync_t* sp = p->syncs;
  2094. for(; sp != NULL; sp=sp->link)
  2095. {
  2096. if( cmHandlesAreEqual(sp->grH,syncGrH) )
  2097. break;
  2098. pp = sp;
  2099. }
  2100. // if the handle was not found ...
  2101. if( sp == NULL )
  2102. {
  2103. // ... and a valid flags value was given ...
  2104. if( flags != 0 )
  2105. {
  2106. // ... then create a new sync target.
  2107. sp = cmMemAllocZ(cmGrSync_t,1);
  2108. sp->grH = syncGrH;
  2109. sp->flags = flags;
  2110. sp->link = p->syncs;
  2111. p->syncs = sp;
  2112. }
  2113. }
  2114. else // ... otherwise syncGrH is already a sync target
  2115. {
  2116. // if flags is non-zero then update the target sync flags
  2117. if( flags != 0 )
  2118. sp->flags = flags;
  2119. else
  2120. {
  2121. // otherwise delete the sync recd assoc'd with syncGrH
  2122. if( pp == NULL )
  2123. p->syncs = sp->link;
  2124. else
  2125. pp->link = sp->link;
  2126. cmMemFree(sp);
  2127. }
  2128. }
  2129. }
  2130. void cmGrReport( cmGrH_t h,cmRpt_t* r )
  2131. {
  2132. cmGr_t* p = _cmGrHandleToPtr(h);
  2133. cmRpt_t* rpt = r==NULL ? p->err.rpt : r;
  2134. cmRptPrintf(rpt,"cfg:0x%x state:0x%x\n",p->cfgFlags, p->stateFlags);
  2135. //cmRptPrintf(rpt,"World: "); cmGrVExtMaxXpt(&p->wext,rpt); cmRptPrintf(rpt,"\n");
  2136. cmRptPrintf(rpt,"View: "); cmGrVExtRpt(&p->vext,rpt); cmRptPrintf(rpt,"\n");
  2137. cmRptPrintf(rpt,"Phys: "); cmGrPExtRpt(&p->pext,rpt); cmRptPrintf(rpt,"\n");
  2138. _cmGrObjReportR(p,p->rootObj,rpt);
  2139. }